Hypersmurf
Moderatarrrrh...
Not a very useful shorthand... it just saves one character (not counting that to get the square brackets, you need to press extra keys)![]()
It's useful because you can type [ts] on a keyboard, whereas to insert the 'times' symbol requires some sort of outside intervention - switching to the Symbol font, or inserting a graphic, or whatever.
If the typist puts "1d6 x Wisdom modifier", and then the layout people do a Global Replace of "x" with a symbol, you end up with words like "example". Whereas it's unlikely that there will be any instance of "[ts]" that isn't intended to be replaced, so there's no danger in the Global Replace.
... except when you forget to do it.
-Hyp.