Hi,
Is there an option for doing this? Right now I'm simply editing the XML file's <graph> tag as follows:
 
  <graph edgedefault="directed" id="G">
 
to
  <graph edgedefault="undirected" id="G">
 
I am guessing that there is some way to do this within yEd rather than by editing the text file, but haven't been able to find the command/option.
 
Thanks in advance.