Customizing your Greenstone3 library

How can I add cross-collection searching?
Add the CrossCollectionSearch serviceRack to the siteConfig.xml 

This is already present for localsite. Need to be using the default interface as the classic interface doesn't currently support this (specified in web.xml).

How do Greenstone 3 format statements and skins work

 * [/images/7/71/Skins_Doc.pdf Greenstone 3 Interface Transformations Library: Basic Documentation] Maxime Roüast
 * [/images/a/ac/Skins_Tech_Doc.pdf Greenstone 3 Skins++ Technical Documentation] Maxime Roüast