GETPAGE()
 Determines the current screen page
------------------------------------------------------------------------------
 Syntax

     GETPAGE([<lHiddenPage>]) --> nScreenPage

 Argument

     <lHiddenPage>  Designates an optional parameter.  If this parameter
     is .T., the function returns the number of the currently hidden page.
     If this parameter is .F., the function returns the number of the visible
     screen page.  The default value is .F..

 Returns

     GETPAGE() returns the number of the currently set screen pages.

 Description

     GETPAGE() allows you to determine which screen page is currently
     available.  The screen page that is currently available can be switched
     by using the SETPAGE() function.

     Since screen output can be directed to a hidden screen page, you can
     determine the number of this hidden page by setting the parameter to .T.

 Example

     Determine the active screen page:

     ? GETPAGE()                        // i.e. 2