Is_Within()
 Checks coordinates against a GET.
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 Syntax:

     Is_Within( <oGet>, <nRow>, <nCol> ) --> <lIsWithin>

 Arguments:

     <oGet> is a GET object.

     <nRow> is a numeric expression representing a screen row (ROW()).

     <nCol> is a numeric expression representing a screen column (COL()).

 Returns:

     Is_Within() returns a logical indicating whether <nRow> and <nCol>
     intersects within the boundries of <oGet>.


 Files:  Library is CUACLIP.LIB.