-This code is derived from the excellent [PostgreSQL Build Farm](http://www.pgbuildfarm.org/) client and server code. Many thanks to them for a fantastic collection which serves such a useful function.
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+## Overview
+
+In the default configuration, a full rebuild of Exim will occur when a new commit to the monitored branches occurs or every 7 days, and it will also build and run the test suite. You can choose to have it also build the docs, but there are several extra package requirements for [building the documentation](./BuildingDocs.html).
+
+Review your enabled features in the Makefile and make adjustments to your *build-farm.conf* to enable those features, using either the makefile_set, makefile_add, or makefile_regex. You may also receive requests from the developers to enable specific features on your build. Documentation for enabling these in [build-config.conf](./BuildConfigConf.html) is elsewhere.
+
+The default build configuration will build all branches specified in a text file on the server. Most of the time this will only be HEAD, but occasionally the developers may have an interest in building some experimental code on a different branch. The above configuration will do all of it automatically for you. The *run_cron* will also check the master repo at of the Exim Build Farm Client Software and update itself.
+
+## Credits
+This code is derived from the excellent [PostgreSQL Build Farm](http://www.pgbuildfarm.org/) client and server code. Many thanks to them for a fantastic collection which serves such a useful function.