"Stupid keys" PgUp/PgDn??! I wonder how people navigate and read through their source code if not using PageUp/Down. Scrolling with mouse? When one key press ca

"Stupid keys" PgUp/PgDn??! I wonder how people navigate and read through their source code if not using PageUp/Down. Scrolling with mouse? When one key press can bring you exactly one page forward or backwards. Irreplacable keys for me. I can't code properly on a keyboard which doesn't have these keys under my third and middle finger (making short jumps from the set of 4 arrow keys).