SECTION 13. APPROPRIATIONS, BUDGETS, AND TRANSFERS.

   (a)    To the extent that they are not in conflict with this Charter, the general laws of Ohio shall govern the proceedings for the preparation of estimates of contemplated revenue and expenditures and the adoption of the annual budget measures authorizing annual tax levies and annual and temporary appropriation measures.

   (b)    Any accruing revenue of the City not appropriated under an appropriation ordinance, and any balance at any time remaining after the purpose of the appropriation shall have been satisfied or abandoned, may from time to time be appropriated by the Council to such uses as will not conflict with any purposes for which such revenue accrued. No money shall be drawn from the Treasury of the City, nor shall any obligation for the expenditure of money to be accrued, except pursuant to appropriations made by the Council, and whenever an appropriation is so made the Clerk of Council shall forthwith give notice to the City Auditor. At the end of each fiscal year all unencumbered balances of appropriations shall revert to the respective funds from which the same were appropriated and shall then be subject to future appropriation; but appropriations may be made in furtherance of improvements or other projects of the City which will not be completed within the current year. Money appropriated as hereinbefore provided shall not be used for purposes other than designated in the appropriation ordinance without authority from Council.