This chapter supplies you with the basic knowledge about templates, UI extension, APIs in eXo Content. Through it, you can build your own content.  Also, with the step-by-step guides, you can create UI extension, deploy a workflow in eXo Content and do many different actions.

This chapter consists of the main following contents:
* [WCM Templates|#CONTref.InsideWCMTemplates]
* [WCM Explorer|#CONTref.InsideWCMExplorer]
* [Extensions|#CONTref.Extensions]
* [Public REST APIs|#CONTref.Devref.PublicRestAPIs]
* [FAQ|#CONTref.FAQ]