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path: root/info/examples/lgc2/3-4-5.mp
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% --- start of displayed preamble in the book ---
input boxes
% --- end of displayed preamble in the book ---
defaultfont:="ptmr8r";
warningcheck:=0;
beginfig(1)
boxjoin(a.se=b.nw);
boxit.one("One");  boxit.two("Two");
drawboxed(one,two);
drawarrow one.n{up}..two.n;
endfig;
end;