Update on the pen computing obsession.
I found and downloaded the trial version of Ideogramic Ideas.
Verdict after a quick play : it does what it says on the tin. It's exactly how I want to draw diagrams. What it's missing is the next stage : ways to infer other kinds of information from the diagrams. So, the simple diagrams remain a novelty and not much else.
I wonder what's up with this company. No news on the web-site since late 2002.