void cpdf_arc (int pdf document, double x-koor, double y-koor, double radius, double start, double end, int mode)
The cpdf_arc() function draws an arc with center at point (x-koor, y-koor) and radius radius, starting at angle start and ending at angle end.
The last optional parameter determines the unit length. If is 0 or omitted the default unit as specified for the page is used. Otherwise the koodinates are measured in postscript points disregarding the current unit.
See also cpdf_circle().