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   GENED()                  Generic 'EDIT' screen, including ADD
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     Usage         GENED([<ExpL>,<ExpN>,<ExpN>)
     Params        <ExpL> = .t. to append, .f. to edit (default - .f.)
                   <ExpN> = top of window      (default - centered)
                   <ExpN> = bottom of window   (default - centered)

                   Params are optional.
     Example       ...
                   use Customer index Customer
                   Gened(.f.,2,20)             && edit
                   ...
                   or
                   use Customer index Customer
                   Gened(.t.,3,15)             && add
                   ...
                   or
                   use Customer index Customer
                   Gened()                     && edit
                   ...


     Notes         Sets keys -9 (F10) and -1 (F2)
                   Allows memo editing.

     INTERNAL FUNCTIONS:
       DO_MEM_ED()