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 MPRESENT()
 Determine if a mouse is present
------------------------------------------------------------------------------
 Syntax

     MPRESENT() --> lIsPresent

 Returns

     MPRESENT() returns true (.T.) if a mouse is present; otherwise, it
     returns false (.F.).

 Description

     MPRESENT() determines whether a mouse is available or not.  For a mouse
     to be available, it must be physically installed in addition to loading
     the appropriate mouse device driver.

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