Just watched your movie. Excellent tool! How did you do it?

Aha! AutoCorrect!

The tt is not a keyboard shortcut! It is an AutoCorrect stored in Normal.dotm. That is different because it does not become active as either a global template nor in an attached template.
See the article "What files do I need to back up?” at:
http://word.mvps.org/FAQs/General/FilesToBackup.htm
It has links to the article "How can I import and export all my AutoCorrect entries, so they can be transferred to another machine?” at:
http://word.mvps.org/FAQs/Customizat...utocorrect.htm. See also AutoCorrect2007.zip The AutoCorrect backup/restore template updated for use with Word 2007 and Word 2010.
and to the article "What do Templates and Add-ins store?” at:
http://word.mvps.org/FAQs/Customizat...latesStore.htm