How many types of "viewwindowtype" of Tree?

Dear All,
Please give your comments,
I don't find out how many types of "viewwindowtype" of Tree in Help,
how do I go behind the resource?

thank you!

There are two place in the Help > Users Manual where you can find documentation regarding the view window types and their attributes. One is in Modeling Tools > Graphical User Interfaces, and the other is in Miscellaneous Concepts > View Attributes Reference. You can also open the View tree and look in the viewslibrary folder for a list of the view window types. I don't think there is a list of the numeric references to the types of view unfortunately (we ought to include one somewhere in the help though...)