ApSoft-64 is a powerful extension to the resident Commodore 64 BASIC. It incorporates a 1541 program loader which speeds up loading of programs by a factor of 5. It also adds 45
easy-to-use-and-understand BASIC commands. These commands are in the same format as Applesoft BASIC for the Apple ] [ family of computers. ApSoft-64 therefore gives the Commodore 64 owner a greatly expanded base of available software in addition toincreasing his or her programming power.

Link to the Manual