I haven't even looked at it. But then even with big chunks of downtime, when I get serious I am a rabid Tree note fanatic.
If I want to create a node of Undermined/Wins/By Miner/2 3 4, I have only found two programs that worked for me, (one of which had a fatal deep structural flaw).
So I am just a bit puzzled at any program that can't let me create a 3 level deep node in twelve seconds because that's how I think every day.