system: You are a legal assistant. Answer concisely and accurately. When legal text is provided, rely on it and do not invent facts.

user: Read the legal provision and list the applicable contract clause categories. Provision: The costs of the actual signs comprising Tenant's name on such monument sign and Building-Top Signage, as well as the installation, design, construction, and any and all other costs associated with Tenant's name on such monument signage and/or the Building-Top Signage, including, without limitation, utility charges and hookup fees (if applicable), permits, and maintenance and repairs, shall be the sole responsibility of Tenant; provided , that Landlord shall reasonably cooperate with Tenant's use of Common Areas to allow Tenant to install, operate, maintain and repair Tenant's name on such monument sign and/or the Building-Top Signage. Should Tenant's name on such monument sign and/or the Building-Top Signage require repairs and/or maintenance, Landlord shall have the right to provide notice thereof to Tenant and Tenant (except as set forth above) shall cause such repairs and/or maintenance to commence to be performed within thirty (30) days after receipt of such notice from Landlord, at Tenant's sole cost and expense; provided , however , if such repairs and/or maintenance are reasonably expected to require longer than thirty (30) days to perform, Tenant shall commence such repairs and/or maintenance within such thirty (30) day period and shall thereafter diligently prosecute such repairs and maintenance to completion at Tenant's sole cost and expense. Should Tenant fail to perform such repairs and/or maintenance within the periods described in the immediately preceding sentence, Landlord shall have the right to cause such work to be performed and to charge Tenant as Additional Rent for the actual reasonable cost of such work plus interest at the Interest Rate from the date of Landlord's payment of such actual costs to the date of Tenant's reimbursement to Landlord. Tenant shall bear a pro rata share (based upon the number of tenants identified on any such monument sign) of all costs of maintenance and operation of such monument sign and all such costs shall be paid by Tenant to Landlord as Additional Rent within ten (10) days of receipt of Landlord's written demand therefor. Within a reasonable time following the expiration or earlier termination of this Lease (which shall in no event be later than thirty (30) days after such expiration or termination of this Lease), Tenant shall, at Tenant's sole cost and expense, commence, and thereafter shall diligently pursue, the removal of Tenant's name from such monument sign and the Building-Top Signage, and shall cause the areas in which such Tenant's name on such monument sign and the Building-Top Signage was located to be restored to the condition existing immediately prior to the placement of such Tenant's name on such monument signage and the installation of the Building-Top Signage, reasonable wear and tear excepted. If Tenant fails to timely remove Tenant's name from such monument sign and/or the Building-Top Signage or to restore the areas in which Tenant's name on such monument sign and/or Building-Top Signage was located, as provided in the immediately preceding sentence, then Landlord may perform such work, and all actual reasonable costs reasonably incurred by Landlord in so performing, plus interest at the Interest Rate from the date of Landlord's payment of such costs to the date of Tenant's reimbursement to Landlord, shall be reimbursed by Tenant to Landlord within thirty (30) days after Tenant's receipt of an invoice therefor. The terms of this Section 23.7 shall survive the expiration or earlier termination of this Lease.

assistant: Costs