The Tag Browser helps you to easily get an overview of the tag-structure of your project. When it is invoked from a tag-input-field, you can use it to select tags or branches.
To the left you can see the branch structure and to the right all tags.
To refresh the displayed tag-structure, press the "Refresh" button.
Select "Show also tags from subbranches" to make SmartCVS also display the tags from subbranches of the (left) selected branch.
An icon with a exclamation mark badge is used, when the branch-structure is not non-ambiguous. For example this might happen, when files on the main-trunk and a branch have the tag.