blob: 6180756b591798926da199a8878ba8dccfea49f9 (
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% --- start of displayed preamble in the book ---
% --- end of displayed preamble in the book ---
defaultfont:="ptmr8r";
warningcheck:=0;
beginfig(1)
draw (0,0)--(50,20)--(40,60)--(30,20);
endfig;
end;
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