This chapter offers you various reference information on XFolder and also some on the WPS which is otherwise hard to get:

- WPS class hierarchy: a diagram of the most important WPS classes
- WPS object IDs: a collection of object IDs which should be valid on most systems
- WPFolder setup strings: all the setup strings that are valid on folder objects
- New XFolder setup strings: new setup strings for folders introduced by the XFolder class
- WPS menu ID's: a collection of menu ID's that can be used with the MENUITEMSELECTED setup string