Preferences: Abbreviations
The settings on this panel let you customize the abbreviations TimeCache uses in its main windows, reports and invoices, for "Expense", "Payment", "Invoice", and "Retainer". In each case you can enter an abbreviation of your choice up to four characters in length.

Expense: Lets you set the abbreviation used to indicate an expense entry. The default is "E".

Payment: Lets you set the abbreviation used to indicate a payment on invoices. The default is "P".

Invoice: Lets you set the abbreviation used to indicate an invoice. The default is "I".

Retainer: Lets you set the abbreviation used to indicate a retainer billing entry. The default is "R".