Untagging files
You can untag revisions with:
$ p4 tag -d -l labelname filepattern
This command removes the association between the specified label and the
file revisions tagged by it. For example, if you have tagged all
revisions under //JamCode/release/jam/2.1/src/...
with
jam-2.1.0
, you can untag only the header files with:
$ p4 tag -d -l jam-2.1.0 //JamCode/release/jam/2.1/src/*.h