in reply to
Re: How scalars work (about numbers, text strings, and binary strings)
in thread How scalars work (about numbers, text strings, and binary strings)
What program did you use to draw it?
Vim, with the help of The Unicode Sliderule, and copy/pasting. I used the same thing, plus regexes, to change the thick lines to thin lines.
I first modelled it on paper, then in Inkscape. It started out as a rather complex diagram, but the end result is, as you can see, quite simple and comprehensible.
Update: your post inspired me to look for tools that can help, and I found this nifty Vim script: http://www.vim.org/scripts/script.php?script_id=173