A lot of effort seems to have gone into making TW accessible for new users, but I don't see any markup help in "empty.html". If file size is a consideration, can't "Getting Started" include a link to an external, official TW markup guide?
So, I would as well agree to adding that to GettingStarted tiddler.
In the long run I would prefer a link to a comprehensive documentation... where 'Markup Guide' or something similar would be one ofthe more prominent topics.
Tobias.