#Developers Reference
##Events Umbraco 4, comes with a complete event model, covering all mayor aspects of the system for triggering custom code or automation.
##Management APIs Create, update, delete all build-in system objects, like documents, media, templates, document types and so on.
##Packaging Information and references for package developers, on how to create packages, as well as extending the packaging format.
##Querying Umbraco comes with several ways of querying, filtering and searching contnet, through the APIs uQuery, DynamicNode and Examine
###Progress Consult the Umbraco 4 documentation trello board to see what we are currently working on. See the TrelloBoard here
###Contribution Umbraco is a community powered project and we welcome any contribution, big or small, even fixing a typo is a valuable contribution. See how to contribute