There are two types of master files that may be used as a start point for fDocs template design:
The second type does not have any fDocs content (such as tag and a DSD) but is used simply as a common starting document for your designs.
From the fDocs side menu click on Master for a list of all such master file. Click on one to view and edit its name and notes. The notes will be displayed when choosing a master to start from.