So, I'm using the Java Outline Editor (JOE) and liking it a lot, but I was thinking that I really don't like the little grey triangles next to non-parent entries because it's easy to confuse them with the little black triangles that signify parent entries. Radio does the same thing and I hate it.
BUT THAT'S THE BEAUTY OF OSS, No? It took me all of 10 minutes to walk around the code, change a couple items, use the included Ant build.xml script to recompile and poof. No more little grey triangles.
I love OSS.