166. Date-stamping discs (for Master)
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The routine below, shown as a red key definition, will automatically save the
current date as a dummy file of zero length, eg "!28Nov86". The use of a red
key is handy if you are going to back up several discs in one session. If
using the ordinary 1770 DFS, you are limited to 7 characters per filename, so
you will have to omit the "!", or perhaps the "8" from "86".

The idea is to *MOUNT the source disc, *DELETE the old date file, *SAVE the
new date with this routine, and then *BACKUP the disc. Alternatively, you can
*RENAME an existing dummy date file. Thus, you know exactly when the disc was
last backed-up, so there is no excuse for forgetting!

If you have a Utility ROM with *BACKUP on it, such as the Advanced Disc
Toolkit, then you can make this whole operation very simple using the red
keys. If not, then you could perhaps incorporate this routine on a line of
BASIC in the BACKUP program provided on the Welcome disc. Abbreviations have
been used, which is why some brackets appear to be missing. When typed as a
line of BASIC, (without the *K.0) the keywords will appear in full when
LISTED, and all will be clear.

*K.0 OS.("SA. !"+M.TI.$,5,2)+M.TI.$,8,3)+M.TI.$,14,2)+" 0 0")|M