Document:

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                                                                   Exhibit 10.34

                            EQUITY RIGHT PURCHASE AND

                           LICENSE AMENDMENT AGREEMENT

      THIS EQUITY RIGHT PURCHASE AND LICENSE AMENDMENT AGREEMENT ("Agreement")
is entered into December 30, 2003 ("Effective Date") by and between IGEN
International, Inc. ("IGEN"), and Wellstat Therapeutics Corporation, formerly
known as Pro-Neuron, Inc. ("Company"). Capitalized terms not defined herein
shall have the meaning ascribed to them in the 1993 Agreement (as defined
herein).

      WHEREAS, on December 14, 1993, IGEN and the Company entered into a term
sheet agreement for the consolidation of cancer research projects (as amended,
the "1993 Agreement");

      WHEREAS, pursuant to the 1993 Agreement, in the event that no Major
Financing is conducted prior to December 31, 2003, certain payments made by IGEN
to the Company would be treated as an equity investment and converted into 4.5%
of the Company's fully diluted equity ("Equity Right");

      WHEREAS, the Company has agreed to repurchase from IGEN, and IGEN agrees
to sell to the Company, the Equity Right;

      WHEREAS, under the 1993 Agreement IGEN granted the Company an exclusive,
worldwide, perpetual license to all of IGEN's interest in the IGEN prodrug
cancer program, including certain patents and patent applications outside the
field of diagnostics, that specifically excluded IGEN's rights and patents using
catalytic antibodies (Abzymes) for all fields of use, including cancer
therapeutics (the "IGEN License")

      WHEREAS, under the 1993 Agreement IGEN agreed to assign its 50% interest
in ProGen to the Company;

      WHEREAS, under the 1993 Agreement the Company granted IGEN an exclusive,
worldwide perpetual license under certain know-how, trade secrets, patents and
patent applications in the field of research, industrial and clinical diagnostic
markers except clinical diagnostic use in a centralized setting (reference
laboratories, central laboratories in hospitals and blood banks) (the "Company
License");

      WHEREAS, the 1993 Agreement contains certain royalty provisions in the
event that one party commercializes technology licensed or otherwise acquired
from the other party; and

      WHEREAS, Company and IGEN desire to terminate the licenses and royalty
obligations provided for by the 1993 Agreement,
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      NOW, THEREFORE, in consideration of the premises and the mutual covenants
set forth herein, and intending to amend the 1993 Agreement to the extent
applicable, the parties agree as follows:

                                   ARTICLE I

                        Purchase and Sale of Equity Right

      Section 1.1 Purchase and Sale. At the Closing, pursuant to and in full
satisfaction of the obligations under Section 6 of the 1993 Agreement, IGEN
shall sell to the Company, and the Company shall purchase from IGEN, upon the
terms and subject to the conditions set forth herein, the Equity Right for an
aggregate price (the "Purchase Price") equal to $1,700,000 (the "Transaction").
From and after the Closing of the Transaction, Section 6 of the 1993 Agreement
shall have no further force or effect.

                                   ARTICLE II

                     Agreements Regarding the 1993 Agreement

      Section 2.1 IGEN License. The Company and IGEN agree that, as of the
Closing, the IGEN License granted under Section 2 of the 1993 Agreement,
together with any obligation to pay royalties thereunder, shall be terminated
and shall be of no further force or effect. The parties agree that "IGEN's
pro-drug cancer program" as used in the IGEN License shall mean the worldwide
rights in the cancer field conferred by the patent listed on Exhibit "A",
attached hereto and incorporated by reference herein, but shall exclude the use
of catalytic antibodies (Abzymes). In accordance with the last sentence of
Section 3 of the 1993 Agreement (but specifically excluding the grant-back
provisions of such sentence), IGEN's diagnostic rights in the IGEN pro-drug
cancer program shall continue to be retained by IGEN.

      Section 2.2 Company License. The Company and IGEN agree that, as of the
Closing, the Company License granted under Section 3 of the 1993 Agreement,
together with any obligation to pay royalties thereunder and the grant-back
provisions of the last sentence of Section 3 of the 1993 Agreement, shall be
terminated.

      Section 2.3 ProGen Interest. IGEN hereby acknowledges and reconfirms the
assignment of all of its right, title and interest in and to its fifty percent
(50%) ownership interest in that certain joint venture commonly known as
"ProGen" to Pro-Neuron (n/k/a Wellstat Therapeutics Corporation). In accordance
with the last sentence of Section 3 of the 1993 Agreement (but specifically
excluding the grantback provisions of such sentence), IGEN's diagnostic rights
in the Pro Gen technology shall continue to be retained in IGEN. At the request
of Company, IGEN shall do all things reasonably necessary to confirm Company's
full ownership of ProGen.

                                  ARTICLE III

                         Representations and Warranties

      Section 3.1 Wohlstadter's Representations and Warranties. Samuel
Wohlstadter represents and warrants to IGEN that: (a) he has approved this
Agreement in his capacity as a

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stockholder and chief executive officer of the Company; (b) there are currently
no negotiations or discussions concerning Major Financing for the Company from
third-party sources; and (c) all consents, filings, notices, approvals and
authorizations of or with (i) any court, governmental agency or body or any self
regulatory authorities, or (ii) any other person or entity, in each case to the
extent required for the execution, delivery and performance by Wohlstadter of
this Agreement, have been obtained or made and are in full force and effect.

      Section 3.2 Company's Representations and Warranties. The Company
represents and warrants to IGEN that (a) the Company is duly organized, validly
existing and in good standing under the laws of the jurisdiction of its
formation; (b) the Company has all necessary right, power and authority to
execute and deliver this Agreement, this Agreement has been duly and validly
authorized, executed and delivered by the Company and is a valid and binding
agreement, enforceable against the Company in accordance with its terms, and the
Company has full right, power and authority to perform its obligations under
this Agreement; (c) all necessary consents, approvals and authorizations of all
government authorities and other persons required to be obtained by the Company
in connection with execution, delivery and performance of this Agreement have
been obtained; and (d) the execution and delivery of this Agreement, the
performance of the Company's obligations hereunder (i) do not conflict with or
violate any requirement of applicable laws or regulations and (ii) do not and
will not conflict with, violate or breach or constitute a default or require any
consent under, any contractual obligations of the Company.

      Section 3.3 IGEN's Representations and Warranties. IGEN represents and
warrants to Company that (a) IGEN is duly organized, validly existing and in
good standing under the laws of the jurisdiction of its formation; (b) IGEN has
all necessary right, power and authority to execute and deliver this Agreement,
this Agreement has been duly and validly authorized, executed and delivered by
IGEN and is a valid and binding agreement, enforceable against IGEN in
accordance with its terms, and IGEN has full right, power and authority to
perform its obligations under this Agreement; (c) all necessary consents,
approvals and authorizations of all government authorities and other persons
required to be obtained by IGEN in connection with execution, delivery and
performance of this Agreement have been obtained; and (d) the execution and
delivery of this Agreement, the performance of IGEN's obligations hereunder (i)
do not conflict with or violate any requirement of applicable laws or
regulations and (ii) do not and will not conflict with, violate or breach or
constitute a default or require any consent under, any contractual obligations
of IGEN.

                                   ARTICLE IV

                             Closing and Termination

      Section 4.1 Conditions Precedent.

      (a) The obligations of IGEN to consummate the Transaction are subject to
(i) there not being in effect any injunction or other order issued by a court of
competent jurisdiction restraining or prohibiting the consummation of the
Transaction and (ii) the representations and warranties of Samuel Wohlstadter
and the Company being true and correct as of the Effective Date and as of the
Closing as if made at the Closing.

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      (b) The obligations of the Company to consummate the Transaction are
subject to (i) there not being in effect any injunction or other order issued by
a court of competent jurisdiction restraining or prohibiting the consummation of
the Transaction and (ii) the representations and warranties of IGEN being true
and correct as of the Effective Date and as of the Closing as if made at the
Closing.

      (c) The obligations of each party to consummate each of the transactions
are subject to (i) the parties obtaining the consent of Roche Holding Ltd. to
this Agreement and to the Equity Right Purchase and License Amendment Agreement
dated as of the date hereof between IGEN and Proteinix, Inc. (the "Proteinix
Agreement"), and (ii) the parties to the Proteinix Agreement having entered into
the sublicense agreements contemplated therein.

      Section 4.2 Closing. Subject to the closing conditions set forth in
Section 4.1 , the closing of the Transaction (the "Closing") shall take place at
the offices of IGEN no later than two business days before the transfer of
assets from IGEN to BioVeris Corporation ("BioVeris") pursuant to the
restructuring agreement between IGEN and Bio Veris (the "Bio Veris Restructuring
Date"). At the Closing: (a) IGEN will sell, transfer and deliver the Equity
Right to the Company, represented by an instrument acknowledging the termination
of the Equity Right; and (b) the Company shall pay IGEN the Purchase Price for
the Equity Right by wire transfer of immediately available funds to be paid to
such account designated by IGEN in writing to the Company at least one (1)
business day prior to the Closing.

      Section 4.3 Termination. This Agreement shall terminate without liability
to any party if the Closing shall not have occurred on or prior to the later of
(i) the date that is thirty (30) days after the BioVeris Restructuring Date (or,
if such date is not a business day, the following business day) and (ii) March
31, 2004, provided that such termination shall not relieve any party from
obligation for any breach or misrepresentation prior to termination.

                                   ARTICLE V

                                 Mutual Release

      Section 5.1 Release by the Company. Effective upon the Closing, the
Company, on its own behalf and on behalf of its stockholders, officers,
employees, directors, agents, representatives, attorneys, predecessors,
successors, and assigns, hereby fully and finally releases, acquits, and forever
discharges, IGEN together with its stockholders, officers, employees, directors,
agents, representatives, attorneys, predecessors, successors, and assigns, from
any and all claims and obligations under the 1993 Agreement, and agrees that it
will not prosecute or pursue any and all claims or actions it may now have or
may have in the future with respect to any activities being conducted up to the
date of this Agreement by IGEN that were directly or indirectly conducted in
conjunction with the Company License.

      Section 5.2 Release by IGEN. Effective upon the Closing, IGEN, on its own
behalf and on behalf of its stockholders, officers, employees, directors,
agents, representatives, attorneys, predecessors, successors, and assigns,
hereby fully and finally releases, acquits, and forever discharges the Company,
together with its stockholders, officers, employees, directors, agents,
representatives, attorneys, predecessors, successors, and assigns, from any and
all claims and

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obligations under the 1993 Agreement, and agrees that it will not prosecute or
pursue any and all claims or actions it may now have or may have in the future
with respect to any activities being conducted up to the date of this Agreement
by the Company that were directly or indirectly conducted in conjunction with
the IGEN License.

                                   ARTICLE VI

                            Miscellaneous Provisions

      Section 6.1 Expenses. Each of the parties hereto shall pay its own
expenses incurred in connection with this Agreement.

      Section 6.2 Further Actions. At any time or times from and after the
Closing, any party shall, at the request of another party, execute and deliver
any further instruments and documents and take all such further action as such
other may reasonably request in order to evidence or effect the consummation of
the Transaction.

      Section 6.3 Filings. Any party to this Agreement may make any filings that
are required by law or by obligations pursuant to any listing agreement with any
national securities exchange as a result of the Transaction.

      Section 6.4 Survival. All representations, warranties, covenants and
agreements made by IGEN, the Company or Wohlstadter in this Agreement shall
survive the Closing.

      Section 6.5 Notices. All notices, requests, consents, approvals,
agreements, authorizations, acknowledgments, and other communications required
or permitted among the parties shall be in writing and shall be deemed given
when (a) sent by registered or certified mail, return receipt requested, postage
prepaid, (b) sent via a reputable overnight courier service, or (c) sent by
facsimile transmission, in each case properly addressed in accordance with the
address specified below.

      If to IGEN, to:

      IGEN International, Inc.
      16020 Industrial Drive
      Gaithersburg, MD 20877
      Attention:  General Counsel

      If to the Company, to:

      Wellstat Therapeutics Corporation
      930 Clopper Road
      Gaithersburg, MD 20878
      Attention:  Legal Department

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or such other address as the person to whom notice is to be given may have
previously furnished to the others in writing in the manner set forth above
(provided that notice of any change of address shall be effective only upon
receipt thereof).

      Section 6.6 Amendment; Entire Agreement. This Agreement may not be
modified, amended, altered or supplemented except upon the execution and
delivery of a written agreement executed by the parties hereto. This Agreement
constitutes the entire agreement between the parties with respect to the subject
matter hereof, and supersedes an previous arrangements with respect to the
subject matter hereof, whether written or oral.

      Section 6.7 Specific Performance. Each of the parties acknowledges and
agrees that the other party would be damaged irreparably in the event any of the
provisions of this Agreement are not performed in accordance with their specific
terms or otherwise are breached. Accordingly, each of the parties agrees that
the other party shall be entitled to an injunction or injunctions to prevent
breaches of the provisions of this Agreement and to enforce specifically this
Agreement and the terms and provisions hereof in any action instituted in any
court of the United States or any state thereof having jurisdiction over the
parties and the matter, in addition to any other remedy to which they may be
entitled, at law or in equity.

      Section 6.8 Assignment. No party may assign any of its rights or
obligations under this Agreement without the prior written consent of the other
parties, and any such attempted assignment without the prior written consent of
the other parties shall be null and void except that IGEN may assign this
Agreement to BioVeris, Inc. pursuant to that certain Restructuring Agreement
between IGEN and BioVeris, Inc. (f/k/a IGEN Integrated Healthcare LLC). After
any assignment of this Agreement by IGEN to BioVeris, Inc, IGEN shall have no
further rights or obligations under or related to this Agreement. This Agreement
shall be binding on, and inure to the benefit of, the parties and their
respective successors and permitted assigns.

      Section 6.9 Severability. Wherever possible, each provision hereof shall
be interpreted in such manner as to be effective and valid under applicable law,
but in case any one or more of the provisions contained herein shall, for any
reason, be held to be invalid, illegal or unenforceable in any respect, such
invalidity, illegality or unenforceability shall not affect any other provisions
of this Agreement, and this Agreement shall be construed as if such invalid,
illegal or unenforceable provision or provisions had never been contained herein
unless the deletion of such provisions or provisions would result in such a
material change as to cause completion of the transactions contemplated hereby
to be unreasonable.

      Section 6.10 Counterparts. This Agreement may be executed in two or more
counterparts, each of which will be deemed to be an original but all of which
together will constitute one and the same instrument.

      Section 6.11 Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware, without regard
to the laws that may be applicable under conflicts of laws principles.

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                            {Signature Page Follows}

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      IN WITNESS WHEREOF, this Agreement has been duly executed and delivered by
the parties hereto on the date first written above.

                                          IGEN International, Inc.

                                          By: /s/ RICHARD MASSEY
                                             --------------------------
                                             Name:
                                             Title:

                                          Wellstat Therapeutics Corporation

                                          By: /s/ SAMUEL WOHLSTADTER
                                             --------------------------
                                              Name:
                                              Title:

      The undersigned has executed the foregoing Agreement solely for the
purpose of acknowledging and agreeing to the representations and warranties set
forth in Section 3.1 thereof.

                                          /s/ SAMUEL WOHLSTADTER
                                          ----------------------------
                                          Samuel Wohlstadter

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                                   EXHIBIT "A"

                               ISSUED U.S. PATENT

                                    6,258,360

and all continuations, divisionals, continuations-in-part, substitutions,
reissues, reexaminations, renewals, extensions, confirmation patents,
registration patents, patents of addition, and foreign counterparts of any of
the above, as well as patents and patent applications that claim priority to a
priority application of one or more of the above.

                                       9<PAGE>

                                                                    Exhibit 10.9
                                    RESTATED
                               TELXON CORPORATION
                             1990 STOCK OPTION PLAN
                    (AS CURRENTLY IN EFFECT, AUGUST 30, 2000)

         1. PURPOSE OF THE PLAN. The purpose of this Plan is to promote the best
interests of the Company and its stockholders by enabling the Company to attract
and retain highly qualified personnel through rewarding valued employees with
the opportunity, pursuant to Options granted under the Plan, to acquire a
proprietary interest in the Company and thereby encourage them to put forth
their maximum efforts for the continued success and growth of the Company.

         2. DEFINITIONS. In addition to such other capitalized terms as are
defined elsewhere in this Plan, the following terms shall when used in this Plan
have the respective meanings set forth below:

               (a) "Act" means the Securities Exchange Act of 1934, as amended
     from time to time.

               (b) "Authorized Shares" means the maximum aggregate number of
     shares of Common Stock specified in Section 3(a) as being authorized for
     issuance and sale under Options granted pursuant to the Plan, subject to
     adjustment thereof in accordance with Section 12 of the Plan.

               (c) "Board" means the Board of Directors of the Company.

               (d) "Code" means the Internal Revenue Code of 1986, as amended
     from time to time.

               (e) "Commission" means the United States Securities and Exchange
     Commission.

               (f) "Committee" means the Committee appointed by the Board in
     accordance with Paragraph (a) of Section 4 of the Plan, if a Committee is
     appointed. If, with respect to any individual grant of Options under this
     Plan, any member or members of the Committee would cause such Committee not
     to satisfy the disinterested administration requirement

<PAGE>

     of Rule 16b-3, as then applicable to the Company under the Act, or the
     "outside director" administration requirement of Code Section 162(m)(4)(C)
     and the regulations thereunder, then in such event the Committee shall be
     comprised of the Committee without such member or members. If no Committee
     has been appointed, any reference to the "Committee" shall be deemed a
     reference to the "Board".

               (g) "Common Stock" means the Common Stock, par value $.01 per
     share, of the Company.

               (h) "Company" means Telxon Corporation, a Delaware corporation.

               (i) "Continuous Employment" means with respect to any Employee,
     the continued employment of such Employee by the Company or any Subsidiary
     without interruption or termination after the grant of an Option to such
     Employee. Continuous Employment shall not be considered interrupted in the
     case of sick leave, military leave or any other leave of absence approved
     by the Board (provided that such leave is for a period of not more than
     ninety (90) days or re- employment upon the expiration of such leave is
     mandated by contract or statute) or in the case of transfers between
     locations of the Company or between the Company, any Subsidiary or any of
     their respective successors.

               (j) "Employee" means any person, including officers and directors
     who are also officers, employed by the Company or any Subsidiary. The
     payment of director's fees by the Company shall not be sufficient to
     constitute a person as an "Employee" of the Company.

               (k) "Family Member means (i) the Optionee to whom an Option is
     granted under the Plan, the spouse or any sibling of the Optionee or any
     ancestor or lineal descendant (including, but not limited to, adopted and
     step children) of the Optionee or his or her spouse or sibling(s), (ii) a
     trust for the exclusive benefit of the Optionee and/or person(s) described
     in clause (i) of this Section 2(k), or the trustee of such a trust in his,
     her or its capacity as such, (iii) a partnership, corporatin, limited
     liability company or similar entity the partners,

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     stockholders or other owners of which include only the Optionee and/or
     person(s) described in clause (i) of this Section 2(k).

               (l) "Non-Profit Organization" means any organization which is
     exempt from United States income taxes under Section 501(c)(3), (4), (5),
     (6), (7), (8) or (10) of the Code.

               (m) "Option" means a right granted to an Employee pursuant to the
     Plan to purchase a specified number of shares of Common Stock at a
     specified price during a specified period and on such other terms and
     conditions as may be specified pursuant to the Plan. Options may be granted
     as Tax Qualified Options or as Options which do not qualify as Tax
     Qualified Options.

               (n) "Option Agreement" means the written agreement evidencing an
     Option by and between the Company and the Optionee as required by Section
     14.

               (p) "Optioned Stock" means the Common Stock subject to an Option.

               (q) "Optionee" means an Employee who receives an Option.

               (r) "Plan" means this 1990 Stock Option Plan, as amended from
     time to time.

               (s) "Predessor Plan" means the Company's 1988 Stock Option Plan,
     as amended.

               (t) "Repricing Transaction" means any grant(s) reasonably related
     to any prior or potential Option(s), whether by an exchange of existing
     Options or Options with new terms or the grant of new Options in tandem
     with previously granted Options that will operate to cancel the previously
     granted Options upon exercise, which adjusts or amends the exercise price
     of a previously granted Option, or repricing of previously granted Options
     or any other grant which would be required to be reported as a repricing
     under Item 402(i) or Regulation S-K as then in effect under the Act; but
     excluding any repricing occurring through the operation of the antidilution
     provisions of Section 12 of the Plan.

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               (u) "Rule 16b-3" means Rule 16b-3 promulgated by the Commission
     under the Act or any similar successor regulation exempting certain
     transactions involving stock-based compensation arrangements from the
     liability provisions of Section 16 of the Act, as adopted and amended from
     time to time and as interpreted by formal or informal opinions of, and
     releases published or other interpretive advice provided by, the Staff of
     the Commission.

               (v) "Section 16 Person" means an Employee who is subject to
     Section 16 of the Act, as interpreted by the rules and regulations
     promulgated by the Commission thereunder, as adopted and amended from time
     to time, and by formal or informal opinions or, and releases published or
     other interpretive advice provided by, the Staff of the Commission.

               (w) "Securities Law Requirements" means the Act and the rules and
     regulations promulgated by the Commission thereunder, as adopted and
     amended from time to time, including but not limited to Rule 16b-3, and as
     interpreted by formal or informal optionions of, and releases published or
     other interpretive advice provided by, the Staff of the Commission, and the
     requirements of any stock exchange, automated interdealer quotation system
     or other recognized securities market on which the Common Stock is listed
     or traded or in which the Common Stock is included, as adopted and amended
     from time to time and as interpreted by formal or informal opinions of, and
     other interpretive advice, provided by the representatives of such stock
     exchange, quotation system or other securities market.

               (x) "Shares" means the Common Stock as adjusted in accordance
     with Section of the Plan.

               (y) "Subsidiary" means a corporation of which not less than fifty
     percent (50%) of the voting shares are owned by the Company or a
     Subsidiary, whether or not such corporation now exists or is hereafter
     organized or acquired by the Company or a Subsidiary.

               (z) "Successor" means the estate of an Optionee or a person who
     succeeds by will or the laws of descent and distribution, or by a transfer
     made pursuant to Section 11(a)(1)(B) or 11(a)(1)(C), to an Optionee's right
     to exercise an Option, including but not limited to a person

<PAGE>

     succeeding by will or the laws of descent and distribution to a prior
     Successor's right to exercise an Option.

               (aa) "Tax Qualified Option" means an Option which is intended at
     the time of grant to qualify for special tax treatment under Section 422A
     or other particular provisions of the Code and the regulations, rulings and
     procedures promulgated, published or otherwise provided thereudner, as
     adopted and amended from time to time.

3. STOCK SUBJECT TO THE PLAN.

               (a) Number of Shares Issuable. Subject to adjustment in
     accordance with the provisions of Section 12 of the Plan, the maximum
     aggregate number of Authorized Shares which may be issued and sold under
     Options granted pursuant to the Plan is equal to the sum of the following:

                    (i) Pre-1995 Authorized Shares. 2,500,000 shares of Common
               Stock, plus such number of the 1,200,000 shares of Common Stock
               authorized for issuance and sale under the Predecessor Plan which
               (A) as of the October 18, 1990 date this Plan was originally
               approved by the stockholders of the Company, were not subject to
               grants (including conditional grants) of stock options then
               outstanding under the Predecessor Plan (from and after
               stockholder approval of this Plan, no further grants shall be
               made under the Predecessor Plan, but any grants (including
               conditional grants) of stock options outstanding under the
               Predecessor Plan at the time of such approval shall continue in
               full force and effect in accordance with their respective terms)
               or (B) to the extent grants (including conditional grants)
               outstanding under the Predecessor Plan as of the date of original
               stockholder approval of this Plan are not exercised in full, are,
               as of any subsequent date, (x) issued pursuant to the exercise of
               a stock option granted under the Predecessor Plan in an amount
               equal to the number of Shares already owned by the person
               exercising such stock option which are delivered by such person
               to the Company in payment of the exercise price and/or related
               withholding taxes, (y) withheld by the Company, in payment of the
               withholding taxes with respect to the exercise of a stock option
               granted under the Predecessor Plan, from the total number of
               shares with respect to which such option is exercised,

<PAGE>

               or (z) no longer subject to grants under the Predecessor Plan by
               reason of such grants having expired or lapsed or having been
               canceled, surrendered, forfeited or otherwise terminates; plus

                    (ii) 1995 Authorized Shares. 850,000 Shares of Common Stock
               (the "1995 Authorized Shares"); and plus

                    (iii) 1997 Authorized Shares. 750,000 Shares of Common Stock
               (the "1997 Authorized Shares").

The inclusion under this Plan of such shares reserved for issuance and sale
under the Predecessor Plan as hereinabove provided shall not be affected by the
expiration or other termination of the Predecessor Plan. The Shares issued and
sold upon the exercise of Options may be treasury Shares, Shares of original
issue or a combination thereof.

     (b) Computation of Shares Available for Grant. For purposes of computing
the number of Authorized Shares available from time to time under the Plan for
the grant of Options, the number of Shares subject to each Option granted
pursuant to the Plan shall be provisionally counted against the Authorized
Shares from and after the grant of such Option but only for so long as and to
the extent that such Option shall remain outstanding and unexercised. Upon the
exercise, in whole or in part, of any Option, the number of Shares issued upon
such exercise shall be permanently deducted from the Authorized Shares, provided
that no such permanent deduction shall be made, and the provisional deduction
against the Authorized Shares shall be reversed, to the extent that the exercise
price and/or the withholding taxes with respect to such exercise are paid
through the delivery to the Company by the person exercising the Option of
Shares already owned by such person and/or through the withholding by the
Company of Shares from the total number of Shares with respect to which the
Option is exercised. The provisional deduction against the Authorized Shares
shall likewise be reversed to the extent of the unexercised portion of an Option
upon the expiration, lapse, cancellation, surrender, forfeiture or other
termination of such Option. The Shares covered by any reversal of a provisional
deduction against the Authorized Shares shall immediately become available for
the granting of new Options under the Plan with respect thereto; provided,
however, that any Shares covered by any such reversal which were 1995 Authorized
Shares shall be

<PAGE>

subject to the restrictions set forth in Section 4(c) of the Plan.

4.   ADMINISTRATION OF THE PLAN.

     (a) Procedure. The Plan shall be administered by the Board or the Board
may, in its discretion, appoint a Committee to administer the Plan subject to
such terms and conditions as the Board may prescribe; provided that the terms
upon which, including the time or times at or within which, and the price or
prices at which Shares may be purchased upon the exercise of Options shall be
approved or ratified by such action of the Board or a committee duly designated
by the Board from its members as may be required by the Delaware General
Corporation Law, as amended from time to time. Once appointed, the Committee
shall continue to serve until otherwise directed by the Board. From time to time
the Board may increase the size of the Committee and may appoint additional
members thereof, remove members (with or without cause), fill vacancies however
caused and remove all members of the Committee and thereafter directly
administer the Plan.

     (b) Powers of the Committee. Subject to the provisions of this Plan, the
Committee shall have the authority, in its sole discretion:

         (i) To determine, upon review of relevant information in accordance
     with Section 7(b) of the Plan, the "Fair Market Value" (as defined in said
     Section 7(b)) of the Shares;

         (ii) To determine the Employees to whom, and the time or times at
     which, Options shall be granted and the number of Shares (up to a maximum
     of 500,000 Shares with respect to which Options may be granted to any
     individual in any one fiscal year of the Company) subject to purchase upon
     exercise of each Option (except as expressly set forth above in this
     Section 4(b)(ii) and such restrictions thereon as may be imposed by
     applicable tax laws which will have to be observed if the Committee intends
     that a particular Option qualify as a Tax Qualified Option, there is no
     limit on the time following the adoption or approval of this Plan within
     which Options may be granted under the Plan so long as it remains in
     effect, on the number of Options which may be granted to any one

<PAGE>

     Employee or on the aggregate number of Shares subject to purchase
     thereunder);

         (iii) To determine the terms and provisions of each Option (which terms
     and provisions need not be identical), including, but not limited to, the
     following:

               (A) The exercise price per Shares, subject to the provisions of
          Section 7 of the Plan; and

               (B) Whether Options shall become exercisable over a period of
          time and when they shall be fully exercisable;

         (iv) To accelerate the time as of which may Option may be exercised;

         (v) To amend any outstanding Option, subject to the provisions of
     Section 19 of the Plan;

         (vi) To authorize any person to prepare and execute on behalf of the
     Company any instrument deemed by the Committee to be necessary or advisable
     to evidence or effectuate the Plan, any Option granted thereunder or any
     amendment to the Plan or any Option;

         (vii) To interpret the Plan;

         (viii) To prescribe, amend and rescind, if deemed necessary or
     appropriate, rules and regulations relating to the Plan, to the extent not
     inconsistent with the Plan; and

         (ix) To make all other determinations the Committee may deem necessary
     or advisable in connection with the administration of the Plan.

     (c) Certain Limitations Applicable to the Options Granted With Respect to
1995 Authorized Shares and 1997 Authorized Shares. Notwithstanding any other
provision of the Plan, neither the Committee nor the Board shall, with respect
to any Option granted under the Plan with respect to any 1995 Authorized Shares
of 1997 Authorized Shares, provide for an "Option Term" (as defined in Section 6
of

<PAGE>

the Plan) of greater than eight (8) years from the date of grant thereof or
approve any Repricing Transaction.

     (d) Effect of Board and Committee Decisions. All decisions, determinations
and actions of the Board and the Committee in connection with the construction,
interpretation, administration, application, operation and implementation of the
Plan shall be final, conclusive and binding on the Company, its stockholders and
Subsidiaries, all Employees and Optionees and the respective legal
representatives, heirs, successors and assigns of all of the foregoing and all
other Successors or other person claiming under or through any of them.

     (e) Exculpation and Indemnification. No member of the Board or the
Committee, and no Employee or other agent acting on behalf of the Board or the
Committee, shall be personally liable for any decision, determination or action
made or taken, or failed to be made or taken, with respect to this Plan or any
Option granted hereunder, and the Company shall fully protect each such person
in respect of any such decision, determination or action and shall indemnify
each such person against any and all claims, losses, damages, expenses and
liabilities arising from or in connection with any such decision, determination
or action.

     5. ELIGIBILITY. Options may be granted only to Employees who, in the sole
judgment of the Committee, have contributed or will contribute to the success
and growth of the Company. An Employee to whom the Company has previously
granted a stock option pursuant to this Plan or otherwise may, if he is
otherwise eligible, be granted additional Options.

     The existence of this Plan shall not create in any Employee any right to be
granted an Option hereunder, and neither the existence of this Plan nor the
granting of any Options to any Employee hereunder shall confer upon such
Employee any right with respect to continuation of the employment of such
Employee by the Company or any Subsidiary or shall in any way interfere with or
limit the right which such Employee by the Company or any Subsidiary or shall in
any way interfere with or limit the right which such Employee, the Company or
any Subsidiary may otherwise have to terminate such employment at any time with
or without cause. Upon the termination of any Employee's

<PAGE>

employment with the Company or any Subsidiary, neither the Company nor any
Subsidiary shall have any liability or obligation to such Employee under this
Plan or any Options granted to such Employee hereunder except to issue the
appropriate number of Shares to such Employee upon the exercise of any Option
granted to such Employee under this Plan prior to such termination of
employment, provided that such exercise is duly and timely made in accordance
with the provisions of this Plan and such Option.

     6. TERM OF OPTIONS. Except as may otherwise by specified by the Committee
in its sole discretion at the time of grant thereof and reflected in the Option
Agreement evidencing such Option, the tem at the end of which each Option shall
expire (the "Option Term") shall be ten (10) years (eight (8) years in the case
of Options with respect to 1995 Authorized Shares or 1997 Authorized Shares)
from the date of grant thereof, provided that the Committee, if it intends that
a particular Option qualify as a Tax Qualified Option, will have to observe such
restrictions on the term of such Option as may be imposed by the applicable tax
laws in order for such Option so to qualify. Each Option shall continue in
effect in accordance with its terms notwithstanding that the Plan may be
terminated prior to the expiration of the term of such Option.

     7. EXERCISE PRICE.

         (a) Minimum Price Required. The per Share exercise price for the Shares
     subject to an Option shall be such price as is determined by the Committee
     at the time of grant of an Option and reflected in the Option Agreement
     evidencing the same; provided that in no event shall such exercise price
     per Shares be less than the Fair Market Value per Share as of the day prior
     to the date of grant of such Option.

         (b) Definition of "Fair Market Value". For all purposes under the Plan,
     "Fair Market Value" per share shall be determined by the Committee in its
     sole discretion; provided that if the Shares are included in the NASDAQ
     National Market System or listed on a stock exchange on the date as of
     which the same is to be determined, the Fair Market Value per Share shall
     be the closing price on such quotation system or exchange which is the
     principal trading market for the Shares on the date of determination or, if
     no sale

<PAGE>

     price was reported for the Shares on the date of determination, the closing
     price on such principal trading market for the last trading day prior to
     the date of determination for which a sale price was reported; provided
     further, however, that if the foregoing method of determining Fair Market
     Value is inconsistent with the then existing tax law requirements with
     respect to any Option which the Committee intends to qualify as a Tax
     Qualified Option, then the Fair Market Value per Share shall be determined
     by the Committee in such manner as is required for such Tax Qualified
     Option to qualify as such.

     8. WITHHOLDING TAXES. Before a stock certificate evidencing the Shares
being acquired through exercise of an Option will be issued to the Optionee or a
Successor making such exercise, the Optionee or Successor must pay, or make
arrangements acceptable to the Company for the payment of, any and all federal,
state and local withholding taxes, whether domestic or foreign, required to be
withheld in connection with the exercise of an Option.

     9. FORM OF PAYMENT.

         (a) Acceptable Forms of Consideration. Except as may otherwise be
     specified by the Committee in its sole discretion at the time of grant
     thereof and reflected in the Option Agreement evidencing such Option, the
     following forms of consideration will be accepted in payment of the
     exercise price for the Shares to be issued upon exercise of an Option and
     of the taxes required to be withheld in connection with such exercise: (i)
     cash, (ii) personal check, (iii) bank cashier's check, (iv) already owned
     Shares (duly endorsed for transfer with signature guaranteed, or (v) any
     combination of the foregoing. Except as may otherwise be specified by the
     Committee in its sole discretion at the time of grant thereof and reflected
     in the Option Agreement evidencing such Option, Shares withheld from the
     Shares to be issued upon exercise of the Option, either alone or in any
     combination with any of the other acceptable forms of consideration recited
     in this Paragraph (a), will also be an accepted form of consideration for
     payment of the taxes required to be withheld in connection with the
     exercise of an Option. In addition to the acceptable

<PAGE>

     forms of consideration hereinabove recited in this Paragraph (a), the
     Committee may determine in its sole discretion at the time of grant of an
     Option, and if the Committee so determines, shall provide in the Option
     Agreement evidencing such Option, that one or both of the following
     additional forms of consideration will be accepted, either alone or in any
     combination with any of the other acceptable forms of consideration recited
     in this Paragraph (a), in payment of the items specified: (vi) in payment
     of the exercise price for the Shares to be issued upon exercise of the
     Option, Shares withheld from the Shares to be issued upon such exercise,
     and/or (vii) in payment of the exercise price for the Shares to be issued
     upon exercise of an Option and the taxes required to be withheld in
     connection with such exercise, a commitment for the delivery to the Company
     of proceeds from the sale, pursuant to a brokerage or similar arrangement
     approved in advance by the Committee in its sole discretion, of Shares to
     be issued upon exercise of the Option. The forms of consideration which
     will be accepted in payment of the exercise price for an Option and related
     withholding taxes shall be specified in the Option Agreement evidencing
     such Option, the person or persons entitled to exercise the Option shall be
     entitled to elect from those so specified in the form(s) to be used in
     effecting payment with respect to a particular exercise; provided that any
     election by a Section 16 Person to use already owned Shares or have Shares
     withheld from those issuable upon such exercise shall be effective only if
     made in accordance with the applicable requirements of Rule 16b-3; and
     provided further that a commitment for the delivery to the Company of
     proceeds from the sale, pursuant to a brokerage or similar arrangement, of
     Shares to be issued upon exercise of an Option will not be accepted from a
     Section 16 Person if under Securities Law Requirements such a sale would be
     matched with such exercise to result in "short swing" profit liability
     under Section 16(b) of the Act on the part of such Section 16 Person with
     respect to such transaction.

         (b) Withholding Tax Loans. In addition to any one or more of the
     acceptable forms of consideration recited in Paragraph (a) of this Section
     9 which the Committee may permit in the Option Agreement to be

<PAGE>

     used for the payment of withholding taxes, the Committee may determine in
     its discretion at the time of grant of an Option to permit the Optionee
     (but not any Successor) to, and if the Committee so determines, shall
     provide in the Option Agreement evidencing such Option that such Optionee
     may borrow from the Company an amount sufficient to pay the taxes required
     to be withheld in connection with the exercise of such Option by the
     Optionee, with each such borrowing to be evidenced by a promissory note of
     the Optionee payable to the order of the Company. Except as may otherwise
     be specified by the Committee in its sole discretion at the time of grant
     thereof and reflected in the Option Agreement evidencing an Option, each
     such loan shall be for a term of five (5) years at a rate of interest equal
     to the Company's then primary domestic commercial lender's prime or base
     rate as in effect from time to time, with payments of interest on such loan
     due quarterly and payments primary domestic commercial lender's prime or
     base rate as in effect from time to time, with payments of interest on such
     loan due quarterly and payments toward the principal of such loan due, to
     the extent of the net proceeds therefrom, within fifteen (15) days after
     any disposition by the Optionee of any Shares acquired upon exercise of any
     stock option granted by the Company to the Optionee pursuant to this Plan
     or otherwise (excluding any disposition of such Shares by gift or to the
     Company in payment of the exercise price of a stock option granted by the
     Company to the Optionee pursuant to this Plan or otherwise and/or any
     related withholding taxes), provided that the entire unpaid principal
     balance shall be due at the earlier of(i) the expiration of the five (5)
     year term, or (ii) the termination of the Optionee's Continuous Employment
     (other than by reason of Optionee's "disability" (as defined in Section
     10(d) or "retirement" (as defined in Section 10(e)).

         (c) Company Withholding of Taxes. If, upon being notified by the
     Company of the amount of the taxes required to be withheld in connection
     with an exercise of an Option, the Optionee or a Successor fails promptly
     to pay, or to make arrangements acceptable to the Company for the payment
     of such taxes, the Company shall have the right to elect (but shall be
     under no obligation) to cover such taxes through:
<PAGE>

               (i) withholding Shares from those issuable upon such exercise,
     provided that any such election so to withhold Shares with respect to the
     exercise of an Option by a Section 16 Person shall be effective only if
     made in accordance with the applicable requirements of Rule 16b-3; and/or

               (ii) deducting such taxes from any amounts payable in cash to the
     Optionee or the Successor by the Company for any reason as of the time of
     such exercise or any time thereafter.

         (d) Valuation of Shares Delivered or Withheld. Where already owned
     Shares, or Shares withheld from those issuable upon such exercise, are used
     in payment of the exercise price and/or related withholding taxes, such
     Shares shall be valued at Fair Market Value as of the day immediately
     preceding the date of exercise and (ii) with respect to the payment of
     withholding taxes, at Fair Market Value as of the day immediately preceding
     the date tax withholding is required to be made.

         (e) Certification of Already Owned Shares. Already owned Shares which
     were acquired through a previous exercise of a stock option granted
     pursuant to this Plan or otherwise may be used in payment of the exercise
     price of an Option and/or related withholding taxes only if the previous
     exercise through which such Shares were acquired was made as of a date not
     less than six (6) months prior to the date of the exercise of the Option in
     connection with which such Shares are being tendered as payment. A tender
     of already owned Shares in payment of the exercise price of an Option
     and/or related withholding taxes will not be accepted by the Company unless
     accompanied by a written statement signed by the person or persons entitled
     to exercise such Option certifying that either (i) the Shares tendered in
     payment were acquired other than through the exercise of a stock option
     granted by the Company or (ii) the Shares tendered in payment were acquired
     through the exercise, on such date(s) as shall be recited in such statement
     (which date(s) shall be not less than six (6) months prior to the date of
     tender), of stock option(s) granted by the Company.

<PAGE>

         (f) Delivery of Already Owned Shares. Where the person is exercising an
     Option elects to use already owned Shares in full or partial payment of the
     exercise price and/or related withholding taxes, the Committee may, in its
     sole discretion, accept, in lieu of physical delivery of the stock
     certificates evidencing such Shares, such constructive delivery of such
     Shares as may be satisfactory to the Committee.

10. METHOD OF EXERCISE.

     (a) Procedure for Exercise, Rights as a Stockholder. Any Option granted
hereunder shall be exercisable at such times and under such conditions as
determined by the Committee and as permitted under the Plan. An Option may not
be exercised for a fraction of a Share. In order to exercise an Option, the
person or persons entitled to exercise it shall deliver to the Company written
notice of the number of Shares with respect to which the Option is being
exercised, accompanied by payment in full of the aggregate price for the Shares
so to be acquired. To constitute an effective exercise of an Option, such notice
and payment shall be addressed to the attention of the Treasurer of the Company
and must be received at the principal executive office of the Company (i) with
respect to an Option that is terminated for "Misconduct" (as defined below)
pursuant to Paragraph (b) of this Section 10 or for "Prohibited Conduct" (as
defined in Section 16(a)) pursuant to Section 16(a), prior to the time of the
occurrence of the event constituting such Misconduct or Prohibited Conduct or
(ii) with respect to any other Option, by 5:00 p.m., local time, on the date of
expiration or termination of the Option. Until the issuance (as evidenced by the
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the stock certificate evidencing such Shares, no right
to vote or receive dividends nor any other rights as a stockholder shall exist
with respect to the Optioned Stock notwithstanding the exercise of the Option.
No adjustment will be made for a dividend or other right for which the record
date is prior to the date the stock certificate is issued, except as provided in
Section 12.

     Exercise of an Option shall result in a decrease in the number of Shares
which thereafter shall be available for sale under such Option by the number of
Shares as to which the Option is exercised, including any Shares

<PAGE>

withheld from the Shares to be issued pursuant to such exercise to cover the
exercise price and/or related withholding taxes.

     (b) Termination of Employment. Except as may otherwise by specified by the
Committee in its sole discretion at the time of grant thereof and reflected in
the Option Agreement evidencing such Option, upon the termination of an
Optionee's Continuous Employment (other than by reason of the Optionee's death,
disability or retirement), the Optionee or any Successor entitled to exercise an
Option may exercise the Option (to the extent that the Option was entitled to be
exercised at the time of such termination of employment) until the earlier of
(i) the date thirty (30) days (or such longer period of time as is determined by
the Committee in its sole discretion at the time of such termination of
employment, provided that if the Committee intends that a particular Option
continue to qualify as a Tax Qualified Option, the Committee will have to
observe such restrictions as may be imposed by applicable tax laws on the
post-termination period within which a Tax Qualified Option may be exercised if
it wishes that any post-termination exercise of such Option is made only within
the period permitted by such laws) after the effective date of the termination
of the Optionee's employment or (ii) the expiration date of such Option, and the
Option shall terminate on the earlier of such dates; provided, however, that if
the Optionee is terminated by the Company for Misconduct, then such Option shall
terminate effective as of the time of the conduct constituting such Misconduct.
As used in this Plan, "Misconduct" means that the Optionee has engaged in
Prohibited Conduct, committed an act of embezzlement, fraud or theft with
respect to the property or business of the Company or a Subsidiary or
deliberately disregarded the rules of the Company or a Subsidiary in such a
manner as to cause material loss, damage or injury to or otherwise endanger the
property, reputation, employees or business prospects of the Company or a
Subsidiary. The Committee shall determine whether an Optionee's employement was
terminated by reason of Misconduct. In making such determination, the Committee
may, but shall not be required to, give the Optionee an opportunity to be heard
and to present evidence on his behalf.

     (c) Death of Optionee. Except as may otherwise be specified by the
Committee in its sole discretion at the

<PAGE>

time of grant thereof and reflected in the Option Agreement evidencing such
Option, upon the death of an Optionee:

         (i) who is at the time of his death in the employ of the Company or a
     Subsidiary and who shall have been in Continuous Employment since the date
     of grant of the Option, the Option may be exercised (to the extent the
     Option would have been entitled to be exercised had the Optionee continued
     living and terminated employment six (6) months after the date of death) by
     a Successor until the earlier of (A) the date six (6) months (or, if the
     Committee intends that a particular Option qualify as a Tax Qualified
     Option, such lesser period of time within which the applicable tax laws may
     require that the Option be exercised in order for such Option so to
     qualify) following the date of the Optionee's death or (B) the expiration
     date of such Option, and the Option shall terminate on the earlier of such
     dates; or

         (ii) within one (1) month after the termination of Continuous
     Employment other than termination by the Company or a Subsidiary for
     Misconduct or due to disability, the Option may be exercised (to the extent
     the Option was entitled to be exercised at the date of termination of
     Continuous Employment) by a Successor until the earlier of (A) the date six
     (6) months following the date of the Optionee's death (or, if the Committee
     intends that a particular Option qualify as a Tax Qualified Option, such
     lesser period of time within which the applicable tax laws may require that
     the Option be exercised in order for such Option so to qualify) or (B) the
     expiration date of such Option, and the Option shall terminate on the
     earlier of such dates.

     (d) Disability of Optionee. Except as may otherwise be specified by the
Committee in its sole discretion at the time of grant thereof and reflected in
the Option Agreement evidencing such Option, if an Optionee's Continuous
Employment terminates due to optionee having become permanently and totally
disabled within the meaning of Section 23(e)(3) of the Code ("disability"), the
Option may be exercised (to the extent the Option was entitled to be exercised
as of the effective date of the termination of Optionee's employment by reason
of such disability) until the earlier of (i) the date one (1) year after the

<PAGE>

effective date of such termination of employment or (ii) the expiration date of
such Option, and the Option shall terminate on the earlier of such dates.

     (e) Retirement of Optionee. Except as may otherwise be specified by the
Committee in its sole discretion at the time of grant thereof and reflected in
the Option Agreement evidencing such Option, if an Optionee's Continuous
Employment terminates by reason of (A) his retirement at any age entitling him
to benefits under the provisions of any retirement plan of the Company or any
Subsidiary in which such Optionee participates; or (B) retirement at any time
after attaining age 65 (whichever circumstances is applicable constituting
"retirement"), the Option may be exercised (to the extent the Option shall be
entitled to be exercised as of the effective date of the termination of the
Optionee's employment by reason of such retirement) until the earlier of (i) the
date three (3) months after the effective date of the termination of his
employment or (ii) the expiration date of such Option, and the Option shall
terminate on the earlier of such dates.

11.  LIMITED TRANSFERABILITY OF OPTIONS.

     (a) Options granted under the Plan and any rights and privileges
appertaining thereto (A) by will or the laws of descent and distribution, (B)
pursuant to a "qualified domestic relations order" as defined in Code Section
414(p)(1)(B) and satisfying the requirements of Code Section 414(p)(1)(A), or
(C) with the consent of the Committee in the exercise of its discretion, to (x)
a Family Member, (y) a Non-Profit Organization, or (z) a charitable trust, and
(2) shall not be subject to execution, attachment or similar process. Transfers
pursuant to clauses (1)(C)(x) may be approved by the Committee if made by gift
or other transfer without the payment of any cash or other economic
consideration by the transferee to the transferor or by sale or other transfer
for cash or other economic consideration or otherwise, whereas transfer pursuant
to clauses (1)(C)(y) and (1)(C)(z) may be approved by the Committee only if made
without the payment of any cash or other economic consideration by the
transferee. A transfer of an Option pursuant to one of the foregoing clauses
(1)(A)-(C) may relate to all or any part of the Shares (but must be for whole
Shares) which then continue to be subject to such Option.

<PAGE>

         (i) Written evidence of a transfer made pursuant to clauses (1)(A) or
     (1)(B), accompanied by the transferring Optionee's original copy of the
     Grant Agreement evidencing the transferred Option, shall be promptly
     provided to the Company upon the entry of the court order effecting, or
     other judicial authorization or direction of, such transfer. Upon the
     Committee's receipt of the foregoing, the Company shall cancel the original
     Option Agreement and re-issue a replacement Option Agreement to the
     transferee for the Option or portion thereof so transferred and to the
     transferring Optionee for any balance of the Option he or she retains
     without transfer.

         (ii) Where an Optionee desires to make a transfer pursuant to clause
     (1)(C), the Optionee shall, prior to making of such transfer, provide
     written notice to the Committee of the proposed transfer, which notice
     shall identify the proposed transferee by name, demonstrate that the
     proposed transferee is within one of the classes of transferees permitted
     by such clause, describe in reasonable detail the terms of the proposed
     transfer and demonstrate that the transfer will comply with the applicable
     requirements of Section 15. Any transfer pursuant to clause (1)(C) shall
     otherwise be in form and substance reasonably acceptable to Committee;
     without limiting the generality of the foregoing, the Committee may
     condition its approval of such a transfer upon the transferor paying, or
     making other arrangements satisfactory to the Committee for the payment of,
     all withholding taxes, if any, which may required to be withheld in
     connection with the transfer. Upon the Committee's receipt and approval of
     the foregoing with respect to a proposed clause (1)(C) transfer, the
     Committee shall notify the Optionee proposing such tranfer in writing of
     its approval of the transfer. Following receipt of such Committee approval,
     the Optionee shall be entitled to proceed with the transfer and shall
     provide the Company written notice of the consummation thereof. Upon the
     receipt of such consummation notice, the Company shall cancel the original
     Option Agreement and re-issue a replacement Option Agreement to the
     transferee for the Option or portion thereof so transferred and to the
     transferring Optionee for any balance of the Option he or she retains
     without transfer.

<PAGE>

     (b) Upon the transfer of an Option or portion thereof in accordance with
Section 11(a), the transferee shall succeed to, and be entitled to exercise, all
of the rights and privileges of the transferring Optionee with respect to the
Option or portion thereof so transferred, provided that the transferred Option
in the hands of the transferee shall continue to be subject to all of the terms,
conditions and restrictions under the Plan and the Option Agreement with respect
to such Option which would be applicable to the Option were it still held by the
Optionee to whom it was originally granted, including, without limitation, any
requirement for the continued exerciseability of other effectiveness of the
Option based upon the life, employment or other status of the original Optionee
and the payment of, or the making of arrangements acceptable to the Company for
the payment of, any and all withholding taxes required to be held in connection
with the exercise of the Option, whether such taxes are ultimately to be paid by
the original Optionee (or in the event of his or her death prior to exercise by
the transferee, his or her estate) or the transferee. Any transferee succeeding
to an Option, whether by direct transfer from the original Optionee or, as
permitted by Section 11(c), through further intervening transfers, shall also be
subject to such restrictions on the exercise thereof as may be applicable to
such transferee as a matter of law which would have applied to the Option were
it still held by the original Optionee, such as, by way of example and not of
limitation, restrictions on the exercise of an Option following a hardship
withdrawal by the original Optionee from the Company's 401(k) plan.

     (c) A Family Member succeeding to an Option pursuant to Section 11(a)(1)(A)
or Section 11(a)(1)(C)(x) may make further transfers of the Option or any
portion thereof pursuant to Section 11(a)(1)(A) or, provided that the
eligibility of the further transferee to received the transfer shall continue to
be determined with reference to the original Optionee, pursuant to Section
11(a)(1)(C). However, a transferee of an Option pursuant to Section 11(a)(1)(A),
11(a)(1)(B), 11(a)(1)(C)(y) or 11(a)(1)(C)(z) shall not be entitled to make any
further transfer of the Option, except that the rights of a transferee pursuant
ot Section 11(a)(1)(A) or 11(a)(1)(B) may be transferred, by will or the laws of
descent and distribution. The rights of any further transferee permitted by this
Section 11(c) shall, as in the case of each prior transferee as provided

<PAGE>

in Section 11(b), be subject to all of the terms, conditions and restrictions
under the Plan and the Option Agreement with respect to such Option which would
be applicable to the Option were it still held by the original Optionee.

     (d) The restrictions on transferability set forth in Section 11(a) shall
not be construed to limit the ability of an Optionee or Successor to elect to
pay all or any portion of the exercise price using the form of consideration
described with respect to clauses (vi) and (vii) of Section 9(a).

     (e) Notwithstanding anything in the foregoing provisions of this Section 11
to contrary effect, no transferee succeeding to an Option shall be entitled to
exercise the transferred option unless there shall be in effect a registration
statement on an appropriate form or other filing covering the shares to be
acquired through such exercise as required from time to time under applicable
Securities Law Requirements and any other applicable provisions of law,
including without limitation, state "blue sky" laws and foreign (national and
provincial) securities laws and the rules and regulations promulgated under any
of such laws, or such transferee establishes, to the satisfaction of counsel for
the Company, that there is an applicable exemption from such Securities Law
Requirements and other applicable laws.

12.  ADJUSTMENTS UPON CHANGES IN CAPITALIZATION OR MERGER.

     (a) Adjustments, in general. Subject to the provisions of Paragraph (b) of
this Section 12 and to any required action by the stockholders of the Company,
the number of Shares covered by each outstanding Option, and the number of
Shares which have been authorized for issuance under the Plan but as to which no
Options have yet been granted or which due to the expiration, lapse,
cancellation, surrender, forfeiture or other termination of a stock option under
this Plan or the Predecessor Plan are again available for grant, as well as the
price per Share covered by each such outstanding Option, shall be
proportionately adjusted for any increase or decrease in the number of issued
and outstanding Shares resulting froma stock split, reverse stock split, stock
dividend, combination or reclassification of Shares or any other increase or
decrease in the aggregate number of issued and

<PAGE>

outstanding Shares effected without receipt of consideration by the Company;
provided, however, that the issuance of Shares pursuant to the conversion or
exchange of any securities of the Company convertible into or exchangeable for
Shares shall not be deemed to have been "effected without receipt of
consideration." Any fractional Shares which would otherwise result from any such
adjustments shall be eliminated either by deleting all fractional Shares or by
appropriate rounding to the next higher (fractions of one-half or more) or lower
(fractions of less than one-half) whole Share. All such adjustments shall be
made by the Board in its sole discretion. Except as expressly provided herein,
no issuance by the Company of shares of stock of any class, or securities
convertible into or exchangeable for shares of stock of any class, shall affect,
and no adjustment by reason thereof shall be made to, the number of or exercise
price for Shares subject to an Option.

     In the event of the proposed dissolution or liquidation of the Company, all
outstanding Options will terminate immediately prior to the consummation of such
proposed action, unless otherwise provided by the Board. The Board may, in the
exercise of its sole discretion in such instances, declare that any Option shall
terminate as of a date fixed by the Board and give Optionee or a Successor the
right to exercise his Option as to all or any part of the Optioned Stock,
including Shares as to which the Option would not otherwise then be exercisable.

     Subject to the provisions of Paragraph (b) of this Section 12, in the event
of a sale of all or substantially all of the assets of the Company, or the
merger or consolidation of the Company with or into another corporation, each
outstanding Option shall be assumed or an equivalent option shall be substituted
by such successor corporation or a parent or subsidiary of such successor
corporation, unless the Board, in the exercise of its sole discretion,
determines that, in lieu of such assumption or substitution, the Optionee or a
Successor shall have the right to exercise the Option as to all or any part of
the Optioned Stock, including Shares as to which the Option would not otherwise
then be exercisable. If in the event of a merger, consolidation or sale of
assets the Board makes an Option fully exercisable in lieu of assumption or
substitution, the Company shall notify the Optionee or Successor entitled to
exercise the Option that the Option

<PAGE>

shall be fully exercisable for a period of thirty (30) days from the date of
such notice, and the Option will terminate upon the expiration of such period.

     (b) Special Adjustments upon Change in Control. In the event of a "Change
of Control" of the Company (as defined in Paragraph (c) of this Section 12),
unless otherwise determined by the board in its sole discretion prior to the
occurrence of such Change in Control, the following acceleration and valuation
provisions shall apply;

         (i) Any Options outstanding as of the date of such Change in Control
     that are not yet fully vested on such date shall become fully vested; and

         (ii) The value of all outstanding Options, measured by the excess of
     the "Change in Control Price" (as defined in Paragraph (d) of this Section
     12) over the exercise price, shall be cashed out. The cash out proceeds
     shall be paid to the Optionee or the Successor entitled to exercise the
     Option.

     (c) Definition of "Change in Control". For purposes of this Section 12, a
"Change in Control" means the happening of any of the following:

         (i) When any "person", as such term is used in Sections 13(d) and 14(d)
     of the Act (other than the Company, a Subsidiary or a Company or Subsidiary
     employee benefit plan, including any trustee of such a plan acting as
     trustee) becomes the "beneficial owner" (as defined in Rule 13d-3
     promulgated by the Commission under the Act, as adopted and amended from
     time to time and as interpreted by formal or informal opinions of, and
     releases published or other interpretive advice provided by, the Staff of
     the Commission), directly or indirectly, of securities of the Company
     representing fifty percent (50%) or more of the combined voting power of
     the Company's then outstanding securities; or

         (ii) The consummation of a transaction requiring stockholder approval
     and involving the sale of all or substantially all of the assets of the
     Company or the merger or consolidation of the Company with or into another
     corporation.

<PAGE>

     (d) Definition of "Change in Control Price." For purposes of this Section
12, "Change in Control Price" shall be, as determined by the Board, (i) the
highest closing sale price of a Share, as reported by the NASDAQ National
Market, any stock exchange on which the Shares are listed or any other
recognized securities market on which the Shares are traded, at any time within
the sixty (60) day period immediately preceding the date of the Change in
Control (the "Sixty-Day Period"), or (ii) the highest price paid or offered, as
determined by the Board, in any bona fide transaction or bona fide offer related
to the Change in Control, at any time within the Sixty-Day Period.

13. TIME OF GRANTING OPTIONS. The date of grant of an Option shall, for all
purposes, be the date on which the Committee makes the determination granting
such Option. Notice of such determination shall be given to each Employee to
whom an Option is so granted within a reasonable time after the date of such
grant.

14. OPTION AGREEMENTS. As a condition to the effectiveness of each grant of an
Option under this Plan, the Optionee shall enter into a written Option Agreement
in such form as may be authorized by the Committee from time to time. Subject to
the provisions of Section 20(a), each such Option Agreement shall contain such
provisions as are required by the terms of this Plan and may contain such
additional provisions not inconsistent with the terms of this Plan as the
Committee in its sole discretion may from time to time authorize. Each Option
Agreement evidencing an Option granted to a Section 16 Person shall also provide
for such minimum waiting period from the date of grant before the Option may be
exercised, and such minimum holding period from the date of the acquisition of
Shares upon exercise of an Option for which such Shares must be held before
making any disposition of such Shares, as may be required by Rule 16b-3.

15. CONDITIONS UPON ISSUANCE OF SHARES AND TRANSFERS OF OPTIONS.

     Notwithstanding anything express or implied to the contrary in the Plan or
any Option Agreement made hereunder:

     (a) No Shares shall be issued with respect to an Option unless the exercise
of such Option and the issuance

<PAGE>

and delivery of such Shares pursuant thereto, nor shall the transfer of an
Option be effective under Section 11 unless the same, shall comply with all
applicable Securities Law Requirements and all other applicable provisions of
law, including without limitation, any applicable state "blue sky" laws and
foreign (national and provincial) securities laws and the rules and regulations
promulgated under any of such laws, and shall be further subject to the approval
of counsel for the Company with respect to such compliance. As a condition to
the exercise of an Option or the issuance of Shares upon exercise of an Option,
or to the transfer of an Option under Section 11, the Company may require the
person exercising such Option to make such representations and warranties to the
Company as may be required, in the opinion of counsel for the Company, by any of
the aforementioned Securities Law Requirements and other laws, which may
include, without limitation, representations and warranties that the Shares
which are being or may be purchased thereunder are being or will be acquired
only for investment and without any present intention to sell or distribute such
Shares.

     (b) The Company shall not have any liability to any Optionee in respect of
any delay in the sale or issuance of Shares, or the transfer of an Option,
hereunder until the Company is able to effect any registration or other
qualification or obtain such other approval or authority form any governmental
authority (domestic or foreign) or self-regulatory organization having
jurisdiction thereover, which registration, qualification, approval or authority
is deemed by the Company's counsel to be necessary to the lawful sale, issuance
or transfer of such Shares or Option, as the case may be, or in respect of any
failure to sell or issue such Shares, or to effect any such Option transfer, as
to which the Company is unable to obtain such requisite registration,
qualification, approval or authority.

     (c) The Company may, in its discretion, but shall under no obligation to,
effect or obtain any registration or other qualification or approval of any
Option granted or transferred hereunder, or of any Shares issuable upon the
exercise thereof, under any applicable Securities Law Requirements or any other
applicable provisions of law, including without limitation, any applicable state
"blue sky" laws and foreign (national and provincial) securities laws and the
rules and regulations promulgated under any of such laws, and in the event any
such registration,

<PAGE>

qualification or approval is not effected or obtained, such Option or Shares, as
the case may be, shall be subject to such transfer and/or other restrictions
(including, if so provided by such laws, rules and regulations, the prohibition
of a particular transaction) as may be imposed by such laws, rules and
regulations under such circumstances. By way of illustrating, but without
limiting the generality of, the foregoing provisions of this Section 15(c), as
of the time of the January 18, 2000 amendments to the Plan, the Shares issuable
upon the exercise of an Option by an Employee were covered by an effective
registration statement which the Company had prior to that date elected to file
(consistent with the discretion recognized in this Section 15(c)) with the
Commission on Form S-8 and would be freely tradable (subject to the filing of a
Form 144 and other applicable requirement of Rule 144 as then promulgated by the
Commission to the extent applicable to the Employee at he time of any trade) by
the Employee, but until the Company were to file (as of the date of such
amendments, the Company has not yet filed and may be delayed in doing so until
it is eligible to file) with the Commission a registration statement with
respect thereto pursuant recent amendments to Form S-8, or were to elect to
register under another available Form, the Shares issuable to the transferee of
an Option under Section 11 would not upon his or her exercise thereof be able to
dispose of such Shares on the public securities markets for such period as may
be required by Rule 144 in the absence of an applicable Form S-8 or other
registration statement. In the absence of such an effective registration, the
Company may condition the transfer of an Option upon its receipt of a written
acknowledgment from the transferee that the Option and the Shares issuable
thereunder are subject to such transfer and/or other restrictions and require
the Option Agreement evidencing such Option and the Shares so issued, as the
case may be, shall bear such legends or include other appropriate provisions
referencing such restrictions as the Company may reasonably require.

16.  FORFEITURE OF OPTIONS AND REALIZED BENEFITS.

     (a) Loss of Unexercised Options. If an Optionee holding an outstanding
Option, without the written consent of the Company as authorized by the
Committee in its sole discretion, engages in any of the following conduct (any
such conduct being referred to as "Prohibited Conduct") at

<PAGE>

any time during the period beginning on the date the Optionee first entered the
employ of the Company or a Subsidiary and continuing for so long as any portion
of such Option remains outstanding and unexercised (the "Grant Period"):

         (i) rendering services for any organization or engaging directly or
     indirectly in any business which, in the sole judgment of the Committee, is
     or becomes competitive with the Company or a Subsidiary, or where such
     rendering of services or engaging in business, in the sole judgment of the
     Committee, is or becomes otherwise prejudicial to or in conflict with the
     interests of the company or a Subsidiary; provided that the ownership of a
     not more than ten percent (10%) equity interest in any organization or
     business whose equity is listed on a recognized securities exchange or
     traded over-the-counter shall not constitute Prohibited Conduct within the
     meaning of this Subparagraph (i);

         (ii) disclosing to anyone outside the Company or any Subsidiary, or use
     in other than the business of the Company or any Subsidiary, any
     confidential or proprietary information relating to the business of the
     Company or any Subsidiary, acquired by the Optionee either during or after
     employment with the Company or a Subsidiary;

         (iii) except as may otherwise be permitted by an agreement otherwise
     made by the Company or a Subsidiary with the Optionee, failing to disclose
     fully and promptly in writing and assign to the Company or to the
     Subsidiary by which the Optionee is or was employed all right, title and
     interest in any discovery, invention, process, method, improvement or idea,
     whether or not patentable or subject to copyright protection and whether or
     not reduced to tangible form or reduced to practice, made or conceived by
     such person during employment by the Company or such Subsidiary, relating
     in any manner to the actual or contemplated business, research or
     development work of the Company or such Subsidiary or to do anything
     reasonably necessary to enable the Company or such Subsidiary to secure a
     patent, copyright or similar protection in the United States of America
     and/or in foreign countries as the Company

<PAGE>

     or such Subsidiary may elect; or

         (iv) inducing or attempting to induce any customer or supplier of the
     Company or a Subsidiary to breach any contract with the Company or a
     Subsidiary or otherwise terminate its relationship with the Company or a
     Subsidiary;

then the Committee shall have the right, upon determining that the Optionee has
engaged in any Prohibited Conduct at any time during the Grant Period (in making
such determination, the Committee may, but shall not be required to, give the
Optionee an opportunity to be heard and to present evidence on his behalf), to
declare the Option forfeited and canceled effective as of the time of the
conduct constituting such Prohibited Conduct.

     (b) Certification upon Exercise. Each time an Option is exercised, the
Optionee or Successor exercising the Option shall be deemed to certify to the
Company that the Optionee did not, without the written consent of the Company as
authorized by the Committee in its sole discretion, engage in any Prohibited
Conduct at any time during the period beginning on the date the Optionee first
entered the employ of the Company or a Subsidiary and ending on the date of such
exercise (the "Pre-Exercise Period").

     (c) Loss of Realized Benefits. In the event that the Committee determines
with respect to a particular exercise of an Option that the Optionee engaged in
any Prohibited Conduct at any time during the Pre-Exercise Period or within one
(1) year after such exercise (in making such determination, the Committee may,
but shall not be required to, give the Optionee an opportunity to be hear and to
present evidence on his behalf), such Optionee shall be liable to he Company (i)
to the extent such Optionee or a Successor has, prior to his receipt of the
"Forfeiture Notice" (as defined below), disposed of the Shares acquired through
such exercise, for payment to the Company of an amount in cash equal to the
excess of (A) the net cash proceeds from such disposition (or if such Shares
were disposed of other than for cash, the aggregate Fair Market Value of such
Shares as of the date of disposition) over (B) that portion of the sum of the
cash and the aggregate Fair Market Value as of the exercise date of any already
owned Shares used by the Optionee or Successor to pay the

<PAGE>

exercise price for such Shares (such sum being referred to as the "Exercise
Payment") which is allocable to the Shares disposed of in the proportion that
such number of Shares bears to the total number of Shares issued pursuant to
such Option exercise and (ii) to the extent such Optionee or Successor still
owns at the time he receives the Forfeiture Notice the Shares acquired through
such exercise, at the option of the Committee, either (A) for the return of such
Shares to the Company in exchange for a cash refund from the Company to such
Optionee or Successor in an amount equal to that portion of the Exercise Payment
which is allocable to the Shares still owned in the proportion that such number
of Shares bears to the total number of Shares issued pursuant to such Option
exercise (such portion being referred to as the "Retained Shares Exercise
Payment") or (B) for payment to the Company of an amount in cash equal to the
excess of the aggregate Fair Market Value as of the exercise date of the Shares
still owned over the Retained Shares Exercise Payment. To enforce such liability
against an Optionee or Successor, the Committee shall notify the Optionee or
Successor thereof in writing within three (3) years of the date of the affected
Option exercise, which notice (the "Forfeiture Notice") shall include a
statement of the form of payment which the Company has elected to receive from
the Optionee or Successor with respect to Shares still owned by the Optionee or
Successor. Within ten (10) days after receiving the Forfeiture Notice, the
Optionee or Successor shall make full payment of such liability to the Company
in cash, or to the extent such Optionee or Successor still owns Shares acquired
through the affected exercise and the Committee elects in the Forfeiture Notice
to receive such Shares, stock certificates evidencing such Shares still owned by
the Optionee or Successor (duly endorsed for transfer with signature
guaranteed). In the event that the Committee elects to receive, and the Optionee
or Successor returns, Shares, the Company shall make the refund payment required
to be made to the Optionee or Successor with respect to such Shares upon the
Company's receipt of such Shares as hereinabove required.

     (d) Cumulative Rights. The obligation of an Optionee under this Section 16
to refrain from Prohibited Conduct is in addition to, and does not in any way
supersede or diminish, any other obligation of such Optionee with respect to
such matters which such Optionee may owe to the Company, any Subsidiary or any
other person under any

<PAGE>

agreement, applicable law or otherwise (a "Similar Obligation"). Any action
taken by the Company or the Committee to enforce, compromise, settle or waive
the provisions of this Section 16 with respect to any particular event
constituting Prohibited Conduct shall not in any way affect the rights of the
Company, the Committee, any Subsidiary or any person against an Optionee with
respect to any other event constituting Prohibited Conduct or any Similar
Obligation, nor shall any action taken or failed to be taken by the Company, any
Subsidiary or any other person against an Optionee to enforce, compromise,
settle or waive any Similar Obligation have any effect on the rights of the
Company and the Committee under this Section 16.

17. RESERVATION OF SHARES. The Company, during the term of this Plan, shall at
all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

18. EFFECTIVENESS OF PLAN. This Plan was adopted by the Board on, and shall be
effective as of, August 27, 1990, subject to the approval hereof by the vote of
the Company's stockholders required therefore by the Delaware General
Corporation Law and applicable Securities Law Requirements within one (1) year
of the date of adoption by the Board, which approval was obtained at the Annual
Meeting of such stockholders held October 18, 1990. The Board has subsequently
approved increases in the number of Authorized Shares and, with respect to the
increases by the 1995 Authorized Shares and the 1997 Authorized Shares, certain
related amendments to this Plan subject to and which received such required
approval of the Company's stockholders at the Annual Meetings thereof held
August 19, 1992, August 19, 1994, August 31, 1995 and September 10, 1997. On
January 18, 2000, the Plan was further amended by the Board as to matter not
requiring any stockholder action with respect thereto. The Plan shall continue
in full force and effect until (i) terminated by resolution of the Board or (ii)
both (A) all Options granted under the Plan have been exercised in full and (B)
no Authorized Shares remain available for the granting of additional Options.
The termination of the Plan shall not affect Options already granted, which
Options shall remain in full force and effect in accordance with their
respective terms as if this Plan had not been terminated.

<PAGE>

19. AMENDMENT OF PLAN AND OUTSTANDING OPTIONS. The Board may, in its sole
discretion, amend the Plan from time to time, provided that any amendment which
Rule 16b-3 or any other Securities Law Requirement requires be approved by the
stockholders of the Company shall be made only with the approval of such
stockholders. Amendments to the Plan shall apply prospectively to all Options
then outstanding under the Plan, except in the case of any amendment which is
adverse to an Optionee or Successor, in which case the amendment shall apply
with respect to the outstanding Options held by the adversely affected Optionee
or Successor only upon the consent of such Optionee or Successor to such
amendment. In exercising its authority under Section 4(b)(v) to amend
outstanding Options, the Committee likewise may make an amendment which
adversely affects the Optionee or Successor only upon the consent of such
Optionee or Successor to such amendment. Notwithstanding the provisions of this
Section 19, the consent of the Optionee or Successor shall not be required with
respect to an amendment to the Plan or to any outstanding Option which is made
in order to comply with Securities Law Requirements or which causes a Tax
Qualified Option no longer to qualify as such.

20.  GENERAL PROVISIONS.

     a. Grants to Foreign Employees. Notwithstanding any other provision of this
Plan to the contrary but subject to applicable Securities Law Requirements and
tax laws, to the extent deemed necessary or appropriate by the Committee in its
sole discretion in order to further the purposes of the Plan with respect to
Employees who are foreign nationals and/or employed outside the United States of
America, an Option granted to any such Employee may be on terms and conditions
different from those specified in this Plan in recognition of the differences in
the laws, tax policies and customs applicable to such an Employee, without the
necessity of the Plan being amended to provide for such different terms and
conditions.

     b. Nature of Benefits. Benefits realized by an Optionee under this Plan or
any Option granted hereunder shall not be deemed a part of such Optionee's
regular, recurring compensation for purposes of the termination, indemnity or
severance pay law of any country and shall not be included in, nor have any
effect on, the determination of benefits under any other employee benefit plan
or

<PAGE>

similar arrangement provided to such Optionee by the Company or a Subsidiary
unless expressly so provided by such other plan or arrangement, or except where
the Committee expressly determines in its sole discretion that an Option or
portion thereof should be so included in order accurately to reflect competitive
compensation practices or to recognize that an Option has been granted in lieu
of a portion of competitive annual cash compensation.

     (c) Determination of Deadlines. If any day on or before which action under
this Plan or any Option granted hereunder must be taken falls on a Saturday,
Sunday or Company-recognized holiday, such action may be taken on the next
succeeding day which is not a Saturday, Sunday or Company-recognized holiday;
provided, however, that the provisions of this Paragraph (c) shall not apply to,
and shall not extend the time for exercise of, any Option which is terminated
for Misconduct pursuant to Section 10(b) or for Prohibited Conduct pursuant to
Section 16(a).

     (d) Governing Law. To the extent that federal laws (such as the Act or the
Code) or the Delaware General Corporation Law do not otherwise control, this
Plan and all determinations made and actions taken pursuant hereto shall be
governed by the laws of the State of Ohio and construed accordingly.

     (e) Gender and Number. Whenever the context may require, any pronouns used
herein shall include the corresponding masculine, feminine or neuter forms, and
the singular form of nouns and pronouns shall include the plural and vice versa.

     (f) Captions. The captions contained in this Plan are for convenience of
reference only and do not affect the meaning of any term or provision hereof.

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