When a document runs over many pages, the navigation controls in the status bar take you to the one you want.

The controls
First, Last	Go to the first or the last page.
Previous, Next	Go one page back or forward.
The page number	Shows the page that fills most of the screen. Type a number to go to that page: Labeljoy goes there as soon as you stop typing - no need to press Enter.

The controls always count pages, in Label view too: going to a page shows the first label on it. A number past the last page is ignored. If the page is already on screen, it flashes briefly instead of moving.

To scroll, turn the mouse wheel. Hold Shift while turning it to scroll sideways. You can scroll from the keyboard too: see Keyboard shortcuts.