% --- start of displayed preamble in the book --- input metaobj % Circles produced as before % --- end of displayed preamble in the book --- newCircle.a(btex start etex); newCircle.b(btex end etex); a.c=origin; b.c-a.c=(3cm,1cm); defaultfont:="ptmr8r"; warningcheck:=0; beginfig(1) drawObj(a,b); ncline(a.c)(b.c); endfig; end;