Three forward slashes for block commenting?

Question

First noticed this in Notepad++, where // comments and /// comments were shown in different colours.
Doxygen revealed more about it, but I\'m n

Answer 1

1. Surely, its easier to hit the same key thrice than hitting two separate keys.
2. Don't know about other IDEs, but XCode4 supports code snippets where you can type pretty much anything. On Visual Studio, I use Visual Assist X, which gives me the same thing. XCode4 Example,Visual AssistX example. I'd have to assume other IDEs provide similar functionality.

That said, yes I have come across triple slashes too and they are generally used to indicate comments that an auto-documentation system like doxygen would pick.