Scroll the selected window so the current line is the center-most text line; on subsequent consecutive invocations, make the current line the top line, the bottom line, and so on in cyclic order. Possibly redisplay the screen too (
Scroll the selected window so the current line is the center-most text line. Possibly redisplay the screen too.
Scroll heuristically to bring useful information onto the screen (
recenter-top-bottom) command recenters the selected window, scrolling it so that the current screen line is exactly in the center of the window, or as close to the center as possible.
C-l twice in a row (
C-l C-l) scrolls the window so that point is on the topmost screen line. Typing a third
C-l scrolls the window so that point is on the bottom-most screen line. Each successive
C-l cycles through these three positions.
You can change the cycling order by customizing the list variable
recenter-positions. Each list element should be the symbol
bottom, or a number; an integer means to move the line to the specified screen line, while a floating-point number between 0.0 and 1.0 specifies a percentage of the screen space from the top of the window. The default,
(middle top bottom), is the cycling order described above. Furthermore, if you change the variable
scroll-margin to a non-zero value
C-l always leaves at least
n screen lines between point and the top or bottom of the window (see Auto Scrolling).
You can also give
C-l a prefix argument. A plain prefix argument,
C-u C-l, simply recenters the line showing point. A positive argument
n moves line showing point
n lines down from the top of the window. An argument of zero moves point’s line to the top of the window. A negative argument -
n moves point’s line
n lines from the bottom of the window. When given an argument,
C-l does not clear the screen or cycle through different screen positions.
If the variable
recenter-redisplay has a non-
nil value, each invocation of
C-l also clears and redisplays the screen; the special value
tty (the default) says to do this on text-terminal frames only. Redisplaying is useful in case the screen becomes garbled for any reason (see Screen Garbled).
The more primitive command
M-x recenter behaves like
recenter-top-bottom, but does not cycle among screen positions.
reposition-window) scrolls the current window heuristically in a way designed to get useful information onto the screen. For example, in a Lisp file, this command tries to get the entire current defun onto the screen if possible.