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                        fg_drawline fg_drawlinep

   Usage
   #include <fg.h>
   void  far  fg_drawline(fg_color_t  color,  int  mode,  int  mask,  int
   line_type, fg_const_pline_t line);

   void fg_drawlinep(fg_color_t color, int mode, int mask, int line_type,
   fg_const_pline_t line);

   Description
   Draws  a line from (x1,y1) to (x2,y2) using the indicated  line  type,
   color,  mode and mask. The line must have been previously  clipped  to
   fg.displaybox.

   fg_drawlinep  differs from fg_drawline in that the end points  of  the
   line will be drawn regardless of the line type.

   Example
   {
   fg_line_t line_to_draw;
   /* A line from the upper left corner to the lower */
   /* right corner of the display. */
   line_to_draw [FG_X1] = fg.displaybox [FG_X2];
   line_to_draw [FG_Y1] = fg.displaybox [FG_Y1];
   line_to_draw [FG_X2] = fg.displaybox [FG_X1];
   line_to_draw [FG_Y2] = fg.displaybox [FG_Y2];
   fg_drawline(FG_WHITE, FG_MODE_SET, ~0,
   FG_LINE_SOLID,
   line_to_draw);
   }