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@value Example

You can use the @value command to limit the number of places you need to change when you record an update to a manual. Here is how it is done in The GNU Make Manual:

1. Set the flags:

   @set EDITION 0.35 Beta
   @set VERSION 3.63 Beta
   @set UPDATED 14 August 1992
   @set UPDATE-MONTH August 1992
   

2. Write text for the first @ifinfo section, for people reading the Texinfo file:

   This is Edition @value{EDITION},
   last updated @value{UPDATED},
   of @cite{The GNU Make Manual},
   for @code{make}, version @value{VERSION}.
   

3. Write text for the title page, for people reading the printed manual:

   @title GNU Make
   @subtitle A Program for Directing Recompilation
   @subtitle Edition @value{EDITION}, ...
   @subtitle @value{UPDATE-MONTH}
   

   (On a printed cover, a date listing the month and the year looks less fussy than a date listing the day as well as the month and year.)
4. Write text for the Top node, for people reading the Info file:

   This is Edition @value{EDITION}
   of the @cite{GNU Make Manual},
   last updated @value{UPDATED}
   for @code{make} Version @value{VERSION}.
   

   After you format the manual, the text in the first @ifinfo section looks like this:

   This is Edition 0.35 Beta, last updated 14 August 1992,
   of `The GNU Make Manual', for `make', Version 3.63 Beta.
   

When you update the manual, change only the values of the flags; you do not need to edit the three sections.

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