In my defence, it’s not because I’m a lazy typist, although a quick apostrophe two buttons to the left of the ‘l’ is much faster than depressing Shift plus the number 2. It’s probably because my background is in newspapers where house style was usually single quotation marks for speech.
I used numerical footnotes, which was considered quite modern back in the day. Most academic documents I had to read still used the old symbol system: asterisk, double asterisk and so forth. There is much debate about the correct order – still! Some say asterisk, double asterisk, dagger (†), double dagger (‡) et cetera. You can even do triples or quadruples.
Digging deeper**, I’ve discovered that the dagger can actually be called an obelisk (so now I get the French joke), obelus, or long cross. So what about the double dagger, you ask?
Well, it’s a diesis or double obelisk. The classical plural of diesis is dieses. So now you know.
The symbols continue with a wiggly knot (§) that’s called a ‘section’, the # hash and the ¶ (aka paragraph mark). Know its correct name? A pilcrow. If that isn’t a killer word for Scrabble, I don’t know what is.
One mystery abides. A Chicago style guide lists what I would call a double thin, but I can’t find the correct typographical nomenclature. I don’t really need to know, but I intend to find out.
** Check out this site if you're hunting down grammar and style hints. It's excellent. http://english.stackexchange.com/questions/95199/do-footnoting-superscripts-go-inside-or-outside-punctuation