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                                fg_drawbox

   Usage
   #include <fg.h>
   void  far  fg_drawbox(fg_color_t  color,  int  mode,  int  mask,   int
   line_type, fg_const_pbox_t box, fg_const_pbox_t clipbox);

   Description
   Draw the outline of a box on the display screen and clip it to the box
   clipbox.  The  box  to be drawn must be  normalized,  i.e.  the  first
   coordinate pair must be the lower left corner and the second pair must
   be the upper right corner.

   Example
   {
   fg_box_t box_to_draw;
   box_to_draw [FG_X1] = -10;
   box_to_draw [FG_Y1] = 0;
   box_to_draw [FG_X2] = 20;
   box_to_draw [FG_Y2] = 30;
   fg_drawbox(FG_WHITE, FG_MODE_SET, ~0,
   FG_LINE_DENSE_DOTTED,box_to_draw,
   fg.displaybox);
   }
   All  sides  of the box will be drawn but the left side will  be  at  x
   coordinate 0 instead of -10.