Hi, I"ve just committed a huge change to introduce the notion of Entity References in xwiki-model. Please all have a look and ensure you like the API in there since it's going to be very hard to change that after 2.2 is released. Basically every single class in XWiki will use xwiki-model in some not too long future so making a bug change there will be very hard in the future. Also, I'm pretty sure my changes have introduced regression in document name handling. Please help me test the application. Thanks -Vincent