Fossil

** not use this option to make changes unless you are sure what
** you are doing.
**
** If you need to use a tagname that might be confused with
** a hexadecimal baseline or artifact ID, you can explicitly
** disambiguate it by prefixing it with "tag:". For instance:
**
**   fossil update decaf
**   fossil <a>update</a> decaf
**
** will be taken as an artifact or baseline ID and fossil will
** probably complain that no such revision was found. However
**
**   fossil update tag:decaf
**   fossil <a>update</a> tag:decaf
**
** will assume that "decaf" is a tag/branch name.
**
** only allow --date-override and --user-override in 
**   %fossil tag add --date-override 'YYYY-MMM-DD HH:MM:SS' \\
**                   --user-override user 
** in order to import history from other scm systems