This Reference manual was put out by the Franklin Computer company - maker of the Apple II clones.

CBASIC - A commercially-oriented, compiler/interpreter BASIC language facility for CP/M and MP/M-80 operating systems. CP/M is available on a multitude of 8080, 8085 and Z80 microcomputer systems.

This manual doesn't appear to have been read, but did manage to get a small crease in the front cover.