<i>That</i> brings back memories. I used THINK Pascal back in the late '80s in an undergrad computer graphics class, and it did take a little while to get used to proportional fonts. But once I got the hang of indenting with tabs instead of spaces, it was actually kind of nice. As the article says, the text was much easier to read, especially the comments.<p>EDIT: I checked my dev environments, and it turns out both Eclipse and Visual Studio support proportional fonts in the code editors. I had just never thought to look.