# Contributing to the CFEngine masterfiles

* Follow the [Core contribution guidelines](https://github.com/cfengine/core/blob/master/CONTRIBUTING.md#how-to-contribute-to-cfengine)
* * Prefix commit subjects with the issue identifier
* * Don't forget to include a [ChangeLog Entry](https://github.com/cfengine/core/blob/master/CONTRIBUTING.md#changelog)
* Follow the [policy style guide](https://docs.cfengine.com/docs/latest/guide-writing-and-serving-policy-policy-style.html)
* Test thoroughly, provide [acceptance tests](https://github.com/cfengine/core/blob/master/tests/acceptance/README) to run in core or masterfiles using the [DCS framework](https://github.com/cfengine/core/blob/master/tests/acceptance/DCS.org)
* Document well See [MPF.md](MPF.md)
* lurk for a bit
* don't be afraid to ask questions
