I have been doing quite a lot of manuscript editing recently and realize that many people—including academics—don’t understand the differences between the symbols hyphen, en-dash, and em-dash. So here is a quick explanation: hyphen (-): is used to join words (“music-related”). You type this character with the Minus key on the keyboard, so it is the easiest one to use. en-dash (–): is used to explain relationships between two concepts (“action–couplings”) or in number series (0–100).

I am back at work after a long vacation, and one of the first things I started doing this year was to reinstall several of my computers. There is nothing like a fresh start once in a while, with the added benefits of some extra hard disk space (not reinstalling all those programs I never use anyway) and performance benefits (incredible how fast a newly installed computer boots up!). I have been testing Ubuntu on an Asus eee for a while, and have been impressed by how easy it was to install and use.