Ok. I am working on learning some blues lines and there is a notation I can't figure out. I also saw this notation in "Daytripper" but ignored it. This is how it looks in TAB: ------7----- ____/ --3--------- I know its a slide up from the third fret to the 7th but the note on the 7th fret is played on the nexy higher string. I don't get it. Help. Please.