bzr 2.2 has gone gold

[Alexander Belchenko]

John Arbash Meinel пишет:
> Thanks to everyone who has helped with this release[1]. This is an
> announcement for the packaging people for them to get binary packages
> built so that we can get a final release announcement out.
> 
> The tarball has been uploaded, and I'm waiting for pqm to finish
> committing to the 2.2 branch. At that point, I'll bring the release back
> into trunk.

I have question about the news item from what's new:

* Tag names can now be determined automatically by automatic_tag_name 
hooks on Branch if they are not specified on the command line. (Jelmer 
Vernooij)

What it means? What is "they" there ("if they are not specified on the 
command line")?