121     You can specify which changesets to rebase in two ways: as a

   121     There are three ways to select changesets::

   122     "source" changeset or as a "base" changeset. Both are shorthand

   122 

   123     for a topologically related set of changesets (the "source

   123       1. Explicitly select them using ``--rev``.

   124     branch"). If you specify source (``-s/--source``), rebase will

   124 

   125     rebase that changeset and all of its descendants onto dest. If you

   125       2. Use ``--source`` to select a root changeset and include all of its

   126     specify base (``-b/--base``), rebase will select ancestors of base

   126       descendants.

   127     back to but not including the common ancestor with dest. Thus,

   127 

   128     ``-b`` is less precise but more convenient than ``-s``: you can

   128       3. Use ``--base`` to select a changeset; rebase will find ancestors

   129     specify any changeset in the source branch, and rebase will select

   129       and their descendants which are not also ancestors of the destination.

   130     the whole branch. If you specify neither ``-s`` nor ``-b``, rebase

   131     uses the parent of the working directory as the base.

   132 

   133     For advanced usage, a third way is available through the ``--rev``

   134     option. It allows you to specify an arbitrary set of changesets to

   135     rebase. Descendants of revs you specify with this option are not

   136     automatically included in the rebase.