== Extensions ==
See https://civicrm.org/extensions/drupal
== Developing Extensions ==
* [http://wiki.civicrm.org/confluence/display/CRMDOC/Settings+Reference Settings Reference]
* [http://www.zyxware.com/articles/4490/civicrm-how-to-add-and-use-your-variable-in-settings-field-in-civicrm-database settings example]
== API ==