Are squashed commits and discarded branches possible in bzr?

[Todd A. Jacobs]

I'm trying to understand Bazaar better, coming from a git background.
One of the things I like about git is the ability to create temporary
branches where I can make incremental commits while trying out an idea,
and then later merge the changes into mainline with a squashed or edited
commit, or simply purge a failed branch from the repository altogether.
Technically, those commits hang around in the git reflog until purged,
but they aren't cluttering up the actual view of history.

So far, despite googling extensively and attempting to grok the manuals,
I haven't figured out how to do either of these things in Bazaar. So,
the first question is obviously "Can these things be done in Bazaar?" If
so, how? If not, how do people handle these sorts of needs in a
Bazaar-centric way?

I don't really want an argument about the relative merits of squashed
commits or of purging irrelevant history. That's my workflow, and I'm
simply trying to find a way to use Bazaar that closely resembles my
current workflow.

-- 
"Oh, look: rocks!"
	-- Doctor Who, "Destiny of the Daleks"