The text in a window can also be scrolled horizontally. This means that each line of text is shifted sideways in the window, and one or more characters at the beginning of each line are not displayed at all. When a window has been scrolled horizontally in this way, text lines are truncated rather than continued (see Continuation Lines), with a ‘$’ appearing in the first column when there is text truncated to the left, and in the last column when there is text truncated to the right.
The command C-x < (scroll-left) scrolls the selected
window to the left by n columns with argument n. With no
argument, it scrolls by almost the full width of the window (two columns
less, to be precise). C-x > (scroll-right) scrolls
similarly to the right. The window cannot be scrolled any farther to
the right once it is displaying normally (with each line starting at the
window’s left margin); attempting to do so has no effect.