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@...BOX


Syntax:     @ <expN1>, <expN2>, <expN3>, <expN4> BOX <expC>

Purpose:    To draw a box on the screen with configurable border and
            fill characters.

Arguments:  <expN1> is the top row.  Values may be in the range of
            zero to 24.

            <expN2> is the left most column.  Values may be in the
            range of zero to 79.

            <expN3> is the bottom row.  Values may be in the range
            of zero to 24.

            <expN4> is the right most column.  Values may be in the
            range of zero to 79.

            <expC> is a string of eight border characters and one
            fill character.  @...BOX draws the box using this string
            starting from the upper left hand corner and then proceeds
            clockwise.

Library:    CLIPPER.LIB


----------------------------------- Examples -------------------------------

   The following are the border definitions for several common box
   types:

   * Regular single-line box.
   single = CHR(218) + CHR(196) + CHR(191) + CHR(179) +;
            CHR(217) + CHR(196) + CHR(192) + CHR(179)

   * Regular double-line box.
   double = CHR(201) + CHR(205) + CHR(187) + CHR(186) +;
            CHR(188) + CHR(205) + CHR(200) + CHR(186)

   * Double-line top and single-line side box.
   double_single = CHR(213) + CHR(205) + CHR(184) +;
            CHR(179) + CHR(190) + CHR(205) +CHR(212) +;
            CHR(179)

   * Single-line top and double-line side box.
   single_double = CHR(214) + CHR(196) + CHR(183) +;
            CHR(186) + CHR(189) + CHR(196) + CHR(211) +;
            CHR(186)


   Later draw the box like this:

   @ 1, 1, 22, 79 BOX double_single