Document:

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                                                                  EXHIBIT 10.19

                                    FORM OF
                                PROMISSORY NOTE

DATE OF NOTE:               ____________, 2000
PRINCIPAL AMOUNT:           $17,805,105
MATURITY DATE:              ____________, 2000

PAYMENT DATE:               Shall be the Date of Note stated above.

INTEREST RATE:              No interest shall accrue.

BORROWER:                   H.T.E., INC.

BORROWER'S ADDRESS:         1000 Business Center Drive, Lake Mary, Florida 32746

LENDER:                     DEMANDSTAR.COM, INC.

LENDER'S ADDRESS:           1551 Sandspur Road, Suite B, Maitland, Florida 32714

         FOR VALUE RECEIVED, the Borrower does hereby covenant and promise to
pay to the order of the Lender or to its successors and assigns, at the
Lender's Address or at such other place as the Lender may designate to the
Borrower in writing from time to time, in legal tender of the United States,
the Principal Amount of this Note at the Payment Date, according to the terms
set forth herein, as full payment for 17,805,105 shares of common stock, par
value $.0001 per share, of the Lender (the "Shares"), pursuant to the
Borrower's subscription for the Shares at a purchase price of $1.00 per Share.
         NOTWITHSTANDING ANY PROVISION OF THIS NOTE, LENDER DOES NOT INTEND TO
CHARGE AND BORROWER SHALL NOT BE REQUIRED TO PAY ANY AMOUNT OF INTEREST OR
OTHER CHARGES IN EXCESS OF THE MAXIMUM PERMITTED BY THE APPLICABLE LAW OF THE
STATE OF FLORIDA; IF ANY HIGHER RATE CEILING IS LAWFUL, THEN THAT HIGHER RATE
CEILING SHALL APPLY. ANY PAYMENT IN EXCESS OF SUCH MAXIMUM SHALL BE REFUNDED TO
BORROWER OR CREDITED AGAINST PRINCIPAL, AT THE OPTION OF LENDER.

         1.       REQUIRED PAYMENT. At the Payment Date, the Borrower shall pay
the Lender the Principal Amount from the proceeds of the exercise of rights
pursuant to the Lender's rights offering declared effective by the Securities
and Exchange Commission on ___________, 2000 (the "Rights Offering"). Any
Shares not subscribed for by eligible rights holders on the Payment Date, which
is also the closing date of the rights offering, shall be redeemed by the
Lender at a price of $1.00 per Share. In such case, the outstanding balance
under this Note shall no longer be due and owing and this Note shall be deemed
paid in full.

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         2.       AMENDMENTS TO NOTE. This Note may not be changed orally, but
only by an agreement in writing, signed by the party against whom enforcement
of any waiver, change, modification or discharge is sought.

         3.       WAIVERS, CONSENTS AND COVENANTS. Borrower or any other party
hereto:

                  (a) waives presentment, demand, protest, notice of demand,
notice of intent to accelerate, notice of acceleration of maturity, notice of
protest, notice of nonpayment, notice of dishonor, and any other notice
required to be given under the law to the Borrower in connection with the
delivery, acceptance, performance, default or enforcement of this Note, any
endorsement or guaranty of this Note, or any other documents executed in
connection with this Note or any other note or other loan documents executed in
connection with any obligation of Borrower, or an affiliate of the Borrower, to
the Lender;

                  (b) consents to all delays, extensions, renewals or other
modifications of this Note or waivers of any term hereof, or release or
discharge by Lender of the Borrower, or the failure to act on the part of
Lender, and agrees that no such action, failure to act or failure to exercise
any right or remedy by Lender shall in any way affect or impair the obligations
of the Borrower or be construed as a waiver by Lender of, or otherwise affect,
any of Lender's rights under this Note; and

                  (c) agrees to pay, on demand, all costs and expenses of
collection or defense of this Note and/or the enforcement or defense of
Lender's rights with respect to, or the administration, supervision,
preservation, or protection of, or realization upon, any property securing
payment hereof, including, without limitation; reasonable attorney's and
paralegal's fees, including fees related to any suit, mediation or arbitration
proceeding, out of court payment agreement, trial, appeal, bankruptcy
proceedings or other proceeding, in such amount as may be determined reasonable
by any arbitrator or court, whichever is applicable.

         4.       INDEMNIFICATION. The Borrower agrees to promptly pay,
indemnify and hold Lender harmless from all state and federal taxes and fees of
any kind and other liabilities with respect to or resulting from the execution
and/or delivery of this Note.

         5.       NON-WAIVER. The failure at any time of Lender to exercise any
of its options or any other rights hereunder shall not constitute a waiver
thereof, nor shall it be a bar to the exercise of any of its options or rights
at a later date. All rights and remedies of Lender shall be cumulative and may
be pursued singly, successively or together, at the option of Lender. The
acceptance by Lender of any partial payment shall not constitute a waiver of
any default or of any of Lender's rights under this Note. No waiver of any of
its rights hereunder, and no modification or amendment of this Note, shall be
deemed to be made by Lender unless the same shall be in writing, duly signed on
behalf of Lender; each such waiver shall apply only with respect to the
specific instance involved, and shall in no way impair the rights of Lender or
the obligations of the Borrower to Lender in any other respect at any other
time.

         6.       APPLICABLE LAW, VENUE AND JURISDICTION. This Note and the
rights and obligations of Borrower and Lender shall be governed by and
interpreted in accordance with the law of the State of Florida. In any dispute
in connection with or to enforce this Note, the Borrower, irrevocably consents
to and confers personal jurisdiction on the Ninth Judicial Circuit in Orange
County, Florida and expressly waive any objections as to venue in such court.

         7.       PARTIAL INVALIDITY. The unenforceability or invalidity of any
provision of this Note shall not affect the enforceability or validity of any
other provision herein and the invalidity or

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unenforceability of any provision of this Note to any person or circumstance
shall not affect the enforceability or validity of such provision as it may
apply to other persons or circumstances.

         8.       BINDING EFFECT. This Note shall be binding upon and inure to
the benefit of the Borrower and Lender and their respective successors,
assigns, heirs and personal representatives, provided, however, that no
obligations of the Borrower hereunder can be assigned without prior written
consent of Lender.

         9.       CONTROLLING DOCUMENT. To the extent that this Note conflicts
with or is in any way incompatible with any other document related specifically
to the loan evidenced by this Note, this Note shall control over any other such
document, and if this Note does not address an issue, then each other such
document shall control to the extent that it deals most specifically with an
issue.

         10.      WAIVER OF TRIAL BY JURY/ARBITRATION. ALL PARTIES HERETO
EXPRESSLY WAIVE THEIR RIGHTS TO A TRIAL BY JURY REGARDING ANY CONTROVERSY OR
CLAIM BETWEEN OR AMONG THE PARTIES HERETO INCLUDING BUT NOT LIMITED TO THOSE
ARISING OUT OF OR RELATING TO THIS INSTRUMENT, AGREEMENT OR DOCUMENT OR ANY
RELATED INSTRUMENTS, AGREEMENTS OR DOCUMENTS, INCLUDING ANY CLAIM BASED ON OR
ARISING FROM AN ALLEGED TORT.

Borrower represents to Lender that the proceeds of this loan are to be used
primarily for business, commercial or agricultural purposes. Borrower
acknowledges having read and understood, and agrees to be bound by, all terms
and conditions of this Note and hereby executes this Note under seal as of the
date here above written.

NOTICE OF FINAL AGREEMENT. THIS WRITTEN PROMISSORY NOTE REPRESENTS THE FINAL
AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO
UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         By signing hereto, the undersigned acknowledge that they understand
the terms of the Note and do hereby agree to be bound by the Note by attaching
their signature(s) hereto.

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         Executed in ___________, Georgia by the Borrower effective __________,
2000.

                                         BORROWER:

                                         H.T.E., INC.

                                         By:
                                            -----------------------------------
                                         Name:  L.A. Gornto, Jr.
                                         Title: Executive Vice President

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February 9, 2000

The Board of Directors
Portal Net Limited
Unit 1806, Hutchison House
10 Harcourt Road
Central
Hong Kong

Dear Sirs,

As independent public accountants, we hereby consent to the incorporation by
reference in this Form 20-F of our report dated October 25, 1999 included in
the Registration Statement. It should be noted that we have not audited any
financial statements of the Company subsequent to September 30, 1999 or
performed any audit procedures subsequent to the date of our report.

Very truly yours,

/s/ Arthur Andersen & Co.
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February 9, 2000

The Board of Directors
Net-Matrix Limited
Unit 1806, Hutchison House
10 Harcourt Road
Central
Hong Kong

Dear Sirs,

As independent public accountants, we hereby consent to the incorporation by
reference in this Form 20-F of our report dated October 25, 1999 included in the
Registration Statement. It should be noted that we have not audited any
financial statements of the Company subsequent to September 30, 1999 or
performed any audit procedures subsequent to the date of our report.

Very truly yours,

/s/ Arthur Andersen & Co.
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