Is there a way to change the shape of nodes using the new rendering interface in Rgraphviz? "$nodes$shape" appears in the graph.par() list, but changing the default value (circle) doesn't affect the output. No surprise, since the vignette doesn't include "shape" in the list of node parameters currently available, but I was wondering if there is a dirty shortcut to avoid this problem (using layoutGraph and renderGraph though). More generally, I need ellipses because my labels are realllly long, and therefore the whole graph is short and wide, and the fontsize results too small... Thanks, paolo