twRight( nRow, cString, cAttr )
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     Right Justifies a string in a window in a specified colour in the
     active window.

       Arguments:

     nRow     - Relative Window Row. Must be passed.

     cString  - String to be displayed. This MUST be passed.

     cAttr    - Clipper colour attribute. Defaults to SETCOLOR().

       Return:

     Current window handle

       Example:

     twRight( 6, "You can right justify, of course." )

     Right justifies the string on window row 6 in the current window
     colour.