Quote Originally Posted by Xaven
Right now, they're using "~" as a sign for "continued". Like, 0.999~ is 0.99999999999999999999999999-- and so on. It never ever stops.

...Isn't it supposed to be a "!", though? "!"s do something like that.

THIS one I know...and it can only exist with whole numbers.

"!" (And I don't recall what it's called, but I'm fairly sure KB got it as a factorial) was a symbol we used in statistics, but basically, it means you multiply every subsequent number until you reach one. For example:

9! = 9x8x7x6x5x4x3x2x1