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                                 L_CHIDECUR()


Syntax:        L_CHIDECUR(<expN1>,<expN2>,<expN3>,<expN4>)


Purpose:       Defines an area in which the mouse cursor will be
               hidden as soon as it enters this area.


Arguments:     <expN1> is the upper horizontal left margin.

               <expN2> is the upper vertical top margin.

               <expN3> is the lower horizontal right margin.

               <expN4> is the lower vertical bottom margin.


Returns:       Nothing.


Usage:         This function is cumulative.  In other words if this
               function is called three times then three calls to
               L_SHOWCURS() must be made to make the mouse cursor
               visible again.


               Useful if the screen over which the mouse can move is
               about to be overwritten by a box containing information
               and the mouse cursor might obscure its contents.


Examples:      * Hide the cursor if it enters this area.
               left = 10
               top = 8
               right = 40
               bottom = 4
               L_CHIDECUR(left, top, right, bottom)


Language:      Assembler