I cannot find in the forum, the requirement for that so I post-it there.
Also we are still using Visio 2007 and will have no chance to get 2010
This VBA code provide the opportunity to list all the Master used in a document, as you have in the drawing explore, except that this is on the shape base.
1) It list all the masters "really" used in your document,
2) selecting a master will list all the sheets where this master is used
3) selecting a sheet will link you to this sheet with the master(s) selected
Thank to this great Visio place where I can find a lot
Zi