If a user of doc builder wishes to clean up there backup it would be great if
they can do this for the selected widget or attribute group backups.

This could be another check box in the config:
option to clear backup:

* clear previous backups before creating a new backup.
* clear all select widget or attribute groups backups, but do NOT process any
documents.

This is instead of going to every document location and deleting it manually.

There should be some form of check based on wheather these backup files have
been commited to cvs:
this $id:.....$ can be found in 
<cham:docinfo>
  <cham:docversion>$id:$</cham:docversion>
</cham:docinfo>

If the cvs version string looks like this " $id:$ " Than it has not been placed
in cvs. If there is a version to this file than there should be a warning and
question to the user: Are you sure you want to remove this? Yes , "Yes to all",
No, "No to all".

There maybe some other options for checking this but we would have to talk about it.