$ \textbf{hg tip}
changeset:   
tag:         tip
user:        Bryan O'Sullivan <bos@serpentine.com>

summary:     first change

$ \textbf{hg qnew first.patch}
$ \textbf{hg tip}
changeset:   
tag:         qtip
tag:         first.patch
tag:         tip
tag:         qbase
user:        Bryan O'Sullivan <bos@serpentine.com>

summary:     [mq]: first.patch

$ \textbf{ls .hg/patches}
first.patch  series  status