-Note that for mercurial and bzr, the srcdir is converted into a
-repository. There is no need to have a separate repository with mercurial
-or bzr.
+For git, the `repo` is created as a bare git repository, and the srcdir is
+made into a clone of it. (monotone and darcs are similar.)
+
+For svn and cvs, the `repo` is the centralized repository, and the `srcdir`
+is a checkout of it.
+
+For mercurial and bzr, the srcdir is the only repository set up.
+
+For darcs, the master repo's apply hook will be preconfigured to call a
+ikiwiki wrapper.