Sort of guessing here...perhaps you are looking for the list of APIs (objects with their methods and properties)?
If so, this documentation is integrated into Visual Studio when you install XMetaL Developer.
You can also download CHM versions from here:
http://na.justsystems.com/content-support-user-guidesThe Programmers Guide lists the APIs and contains other related documentation specific to scripting. DOM-related APIs supported by the product are included.