I've updated the generic BBC BASIC (Z80) documentation, which also covers the CP/M edition, to include the version 5 features added last year. If you spot any errors, omissions or typos please let me know.
BBC BAS(C (Z80) version 5 is available configured for CP/M-80, for the Acorn Z80 Second Processor (including emulators) and for the Agon Light single-board computer.