[R] Graph plots

[Georgia Chan]

Dear R  people,
I am  currently experimenting with graph plotting using libraries
Rgraphviz, graph, etc. as needed by GeneTS (bioconductor project).

The plots I get use huge fonts to label the nodes and the edges
and that often makes the plot unreadable (overlapping edge labels etc).

The question is perhaps more related to graph attribute values of  Graphviz,
but I was hoping that there is a more straightforward way of making
graphs more readable within R.

Any advice/examples will be much appreciated.

Thanks in advance,
georgia