% --- start of displayed preamble in the book --- input metauml % --- end of displayed preamble in the book --- defaultfont:="ptmr8r"; warningcheck:=0; beginfig(1) Class.A("A")()(); Class.B("B")()(); B.sw=A.ne+(20,10); drawObjects(A,B); clink(inheritance)(A,B); endfig; end;