Indefinite authority

From Conservapedia

Indefinite authority is not stated as a specific amount. Rather, the amount provided is determined by specified variable factors, such as the amount of the receipts from a specified source, the amount of the proceeds from the sale of financial assets with recourse, or the amount necessary to cover obligations associated with entitlements. In the case of receipts or proceeds from financial assets sold with recourse, the amount of budget authority to be shown in any year will equal the amount received or estimated to be received in that year.