static char *PS_head[] = {
       "%ps_include: begin\n",
       "save\n",
       "/ed {exch def} def\n",
       "{} /showpage ed\n",
       "{} /copypage ed\n",
       "{} /erasepage ed\n",
       "{} /letter ed\n",
       "currentdict /findfont known systemdict /findfont known and {\n",
       "       /findfont systemdict /findfont get def\n",
       "} if\n",
       "36 dict dup /PS-include-dict-dw ed begin\n",
       "/context ed\n",
       "count array astore /o-stack ed\n",
       "%ps_include: variables begin\n",
       0
};

static char *PS_setup[] = {
       "%ps_include: variables end\n",
       "{llx lly urx ury} /bbox ed\n",
       "{newpath 2 index exch 2 index exch dup 6 index exch\n",
       " moveto 3 {lineto} repeat closepath} /boxpath ed\n",
       "{dup mul exch dup mul add sqrt} /len ed\n",
       "{2 copy gt {exch} if pop} /min ed\n",
       "{2 copy lt {exch} if pop} /max ed\n",
       "{transform round exch round exch A itransform} /nice ed\n",
       "{6 array} /n ed\n",
       "n defaultmatrix n currentmatrix n invertmatrix n concatmatrix /A ed\n",
       "urx llx sub 0 A dtransform len /Sx ed\n",
       "0 ury lly sub A dtransform len /Sy ed\n",
       "llx urx add 2 div lly ury add 2 div A transform /Cy ed /Cx ed\n",
       "rot dup sin abs /S ed cos abs /C ed\n",
       "Sx S mul Sy C mul add /H ed\n",
       "Sx C mul Sy S mul add /W ed\n",
       "sy H div /Scaley ed\n",
       "sx W div /Scalex ed\n",
       "s 0 eq {Scalex Scaley min dup /Scalex ed /Scaley ed} if\n",
       "sx Scalex W mul sub 0 max ax 0.5 sub mul cx add /cx ed\n",
       "sy Scaley H mul sub 0 max ay 0.5 sub mul cy add /cy ed\n",
       "urx llx sub 0 A dtransform exch atan rot exch sub /rot ed\n",
       "n currentmatrix initgraphics setmatrix\n",
       "cx cy translate\n",
       "Scalex Scaley scale\n",
       "rot rotate\n",
       "Cx neg Cy neg translate\n",
       "A concat\n",
       "bbox boxpath clip newpath\n",
       "w 0 ne {gsave bbox boxpath 1 setgray fill grestore} if\n",
       "end\n",
       "gsave\n",
       "%ps_include: inclusion begin\n",
       0
};

static char *PS_tail[] = {
       "%ps_include: inclusion end\n",
       "grestore\n",
       "PS-include-dict-dw begin\n",
       "o 0 ne {gsave A defaultmatrix /A ed llx lly nice urx ury nice\n",
       "       initgraphics 0.1 setlinewidth boxpath stroke grestore} if\n",
       "clear o-stack aload pop\n",
       "context end restore\n",
       "%ps_include: end\n",
       0
};