edge { arrowstyle: filled; }
graph {
colorscheme: x11;
flow: south;
title: G;
x-dot-overlap: false;
x-dot-ratio: fill;
x-dot-size: 11,8.5;
}
[ 123 ] { fontsize: 10px; shape: none; }
[ foo ] { fontsize: 10px; shape: none; }
[ 123 ] --> [ foo ]