The Kermit 95 documentation in the manual directory contain tags that are
replaced by mkdocs.rexx allowing the manual to be automatically updated with
K95 version numbers, build dates, file last modified times, etc.

You can have multiple tags in one line. Other tags, including HTML, are not
allowed between the start and end tag. Eg, this is forbidden:
    <!--$ver$--> <b>unknown!</b> <!--/$ver$-->

Supported Tags
================

Major, Minor Version:
  <!--$ver$-->3.0 DEV<!--/$ver$-->

Full version:
  <!--$ver-full$-->3.0.0 DEV<!--/$ver-full$-->

Version, Major:
  <!--$ver-major$-->3<!--/$ver-major$-->

Version, Minor:
  <!--$ver-minor$-->0<!--/$ver-minor$-->

Version, Revision:
  <!--$ver-rev$-->0<!--/$ver-rev$-->

Version, Release:
  <!--$ver-rel$-->DEV<!--/$ver-rel$-->

Version date:
  <!--$ver-date$-->1 January 2003<!--/$ver-date$-->

Version Short Date:
  <!--$ver-short-date$-->1 Jan 2003<!--/$ver-short-date$-->

Version ISO Date:
  <!--$ver-date-iso$-->2003-01-01<!--/$ver-date-iso$-->

File last updated:
  <!--$last-update$-->Tue Jul 25 07:15:22 2023<!--/$last-update$-->

  This value will come from git if possible in RFC2822 style format. If that
  fails, then the native format from C-Kermits \Fdate function will be used.

File last updated, short:
<!--$last-update-short$-->25 July 2023<!--/$last-update-short$-->

Alternate Tag Form
==================
All of the above tags can be used of the form:
  $!ver$
  $!ver-full$
  etc
These will be visible in the unprocessed version of the documentation, but this
allows them to be used in places like attributes or the title tag.