NAME: LineRel

     USE: This procedure will draw a line from the position of the
          current pointer to a position that is a relative distance
          from the current pointer.  It will use the current linestyle,
          thickness, and color.  The current pointer becomes the last
          point drawn by LineRel.

     DEPENDENCY:  Must first be in graphics mode.  The unit Graph
                  must also be placed in the uses section.

     SYNTAX: LineRel(X1,Y1 : Integer);