The canonical shortcuts are Cmd-left/right/up/down, which move the cursor to the absolute left, right, top, and bottom of the document, respectively. This makes perfect sense.
Home and End behave differently, they move the viewport to the beginning or end of the document but do not move the cursor. They are like scrolling in that you don't lose your position. I'm not sure, but I think that page up and down (Fn-up and Fn-down) behave similarly. I never use these though.
Home and End behave differently, they move the viewport to the beginning or end of the document but do not move the cursor. They are like scrolling in that you don't lose your position. I'm not sure, but I think that page up and down (Fn-up and Fn-down) behave similarly. I never use these though.