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 CHANGED:  SCROLL()
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     The new syntax for SCROLL() is:

     SCROLL([<nTop>], [<nLeft>],
        [<nBottom>], [<nRight>],
        [<nRows>], [<nCols>] ) --> NIL

     The <nCols> parameter has been added to SCROLL() to specify a horizontal
     scroll value.

     <nCols> defines the number of columns to scroll.  A value greater than
     zero, scrolls left the specified number of columns.  A negative value
     scrolls right the specified number of columns.  If <nCols> is not
     specified, the screen will not be scrolled horizontally.