To clear all tags from the current segment only:
Place the cursor in the tag's text.
Click Clear All Tags,
and select Segment from the
drop-down menu. 
A warning message appears.

Click Yes
to continue. Click No to cancel
the operation.
The tags are removed from the segment.
To clear all tags from the document:
Click Clear
All Tags, and select
Document from the drop-down
menu.

A warning message appears:

Click Yes
to continue. Click No to cancel
the operation.
The tags are removed from the target segments.