* The **obsolete marker** concept aiming to provide and alternative to strip to

   get ride of changesets.

 * A mercurial extension: **evolve** that rewrite using *obsolete marker*

   under the hood.

regarding mercurial internals, the first and most important step is the

**obsolete marker**. However most user will never be directly exposed to the

concept. For this reason document about changeset evolution are put first.

Evolve: A robust alternative to MQ

====================================

* Using the obsolete marker concept, (see next section for advantage of the

  obsolete marker)

* provide a more robust alternative for mq covering any usage but guard.

..warning:: The evolve extention and the obsolete marker are at an experimental

            stage. While using obsolet you'll likely be exposed to complexe

            implication of the **obsolete marker** concept. I do not recommend

            non power user to test this at this stage.

            Production ready version should hide such details to normal user.

To enable the evolve extension use::

    $ hg clone http://hg-dev.octopoid.net/hgwebdir.cgi/mutable-history/

    $ mutable-history/enable.sh > ~/.hgrc