%?... special texts for text replacement
%?... special texts which are replaced by particular texts
at program run-time causes the interspersing of data into the fixed date text,
which quality is essentially depending on the command line arguments given
for running the program. The complete special text is always replaced
accordingly in output if the fixed date text must be displayed.
Cleverly combined, these special texts also offer very effective mechanisms used for the definition of particular texts in a highly flexible manner, for example:
0*d1#999 Every day of year: Today is %K, the %n (%N)