% --- start of displayed preamble in the book --- input metaobj % Circle 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) ncloop(a)(a) "angleA(0)", "armA(1cm)", "offsetA((0,2mm))", "angleB(0)", "armB(1cm)", "offsetB((0,-3mm))", "linecolor(blue)","linewidth(1pt)", "loopsize(1cm)"; drawObj(a); endfig; end;