String literal. A string literal or anonymous string is a type of literal in programming for the representation of a string value within the source code of a computer program.
As usual, the devil is in the details. For instance, with some prepaid wireless plans, your minutes are only good for a limited time, usually 30 to 90 days. If you don't use them before they expire, they are simply subtracted from your account anyway.
Prepaid expense is an asset because it has future economic benefits, i.e. it benefits future periods. In contrast, an expense has no future economic benefits. When prepaid expense is used or expires, it means it will no longer benefit future periods so they become an expense. Therefore, as an asset, when it increases, it either (1) increases equity or (2) decreases another asset (Debit Prepaid Expense, credit Cash).