% --- start of displayed preamble in the book --- input piechartmp; % --- end of displayed preamble in the book --- % graphic converted to gray in book using 'color2gray' defaultfont:="ptmr8r"; warningcheck:=0; beginfig(1) Segment(15,"Lions",auto); Segment(6,"Tigers",auto); Segment(10,"Hyaena",auto); Segment(7,"Monkeys",auto); Segment(5,"Warthogs",auto); PieChart(2.5cm,0.4,70,0,0); endfig; end;