The cpdf_rlineto() function draws a line from the current point to the relative point with coordinates (x_coor, y_coor). Returns TRUE on success or FALSE on failure.
The optional parameter mode determines the unit length. If it is 0 or omitted the default unit as specified for the page is used. Otherwise the coordinates are measured in postscript points disregarding the current unit.
See also cpdf_moveto(), cpdf_rmoveto() and cpdf_curveto().