Well, after years of avoiding it, I was finally about to create a package to gather up all my miscellaneous functions for I wouldn't have to search all over for them. We could work together along those lines.
collapsibleTree tree works--it's just a matter
and making that a dependency.
If you'll take the first cut with an
empty project following the Wickham book, so we can track each other, this will be a good learning experience for both of us.
It's late here in Seattle, WA USA and I'm about to turn in for the night. When you're ready, just edit one of your posts and it will automagically pop up in my unread folder here.