Dilly emailed me last night to ask how to put the dots on my name. I replied that, on a Mac, it's alt+u, then the letter - e for a diaeresis or u for an umlaut, but I didn't know for a PC. I googled to find out. For a ë, one way of doing it is Alt + 137. But each letter has a different combination of three numbers and, capitalised, another set again. Unless you use them all, all the time, you couldn't possibly remember them. But the Mac makes sense - it's the option key and c for a cedilla, because you're most likely to want one under a c and Alt+e for an acute accent, and so on.
I wonder, if Macs hadn't been there, whether PCs would be so easy to use now as they are?