It's appositival, if it's there. And it doesn't have to be there. And it's really obvious that it's there when it's there.
Larry WallI was raised a musician and I played classic music, violin, in orchestras and music comedy theaters, I have music running around in my head all the time, and if I hear music that's too interesting, I have to pay attention to it.
Larry WallThe random quantum fluctuations of my brain are historical accidents that happen to have decided that the concepts of dynamic scoping and lexical scoping are orthogonal and should remain that way.
Larry Wall