I know what most of the signs stand for, but this has always baffled me. Sometimes I'll see something like ---/12--- I know the / means slide, but slide from what?
Just pick a spot man :p
when there isn't a number before the slide, it means there's no specific position to slide from. I usually just slide up from a random fret.
Just make sure you slide from a fret which is < than the fret given.
yeah, slide from any random spot below the designated fret (in this case 12). Usually just slide up from where ever you are playing before this....if that makes sense.