cua-scroll-upcua-scroll-up is an interactive compiled Lisp function in `
cua-base.el'. (cua-scroll-up &optional ARG) Scroll text of current window upward ARG lines; or near full screen if no ARG. If window cannot be scrolled further, move cursor to bottom line instead. A near full screen is `next-screen-context-lines' less than a full screen. Negative ARG means scroll downward. If ARG is the atom `-', scroll downward by nearly full screen.