165. Date-stamping discs
     ~~~~~~~~~~~~~~~~~~~
It is easy to overlook the important task of regularly backing-up your discs.
This is all the more important when using double-density DFSs, as so much
information can be carried on just one disc, (up to 640k with Acorn ADFS). As
a record of when a disc was last backed-up, you could save a dummy file of
zero length, with the date as the filename, eg *SAVE !7thDec 0 0 . The form
of the date doesn't really matter, but the use of a "!" prefix followed by a
number as the next character, will make the file appear first in the
catalogue, even before !BOOT. Users of the Master 128 can automate this
procedure to some extent, as shown in the next hint. Another way of
subsequently altering this dummy date file is to simply *RENAME it.