line-move

line-move is a compiled Lisp function in `simple.el'.

(line-move ARG &optional NOERROR TO-END TRY-VSCROLL)

Move forward ARG lines.
If NOERROR, don't signal an error if we can't move ARG lines.
TO-END is unused.
TRY-VSCROLL controls whether to vscroll tall lines: if either
`auto-window-vscroll' or TRY-VSCROLL is nil, this function will
not vscroll.