42. User key definitions
    ~~~~~~~~~~~~~~~~~~~~
Some members may not know that, having programmed the red 'soft' keys, you
can SAVE the definitions directly with the command *SAVE KEYS B00 C00 or
*SAVE KEYS B00+100. The definitions can then be reLOADed at any time, (even
if you have a BASIC program in memory, or if you are using View or Wordwise),
with *LOAD KEYS. Disc users can conveniently incorporate this command in the
!BOOT file. This applies to the BBC B (& B+ ?) but not the Master or Compact.