left you can scroll, but eventually all the text will disappear off the
left edge.
-@vindex automatic-hscrolling
+@vindex auto-hscroll-mode
In Emacs 21, redisplay automatically alters the horizontal scrolling
of a window as necessary to ensure that point is always visible, if
-@code{automatic-hscrolling} is set. However, you can still set the
+@code{auto-hscroll-mode} is set. However, you can still set the
horizontal scrolling value explicitly. The value you specify serves as
a lower bound for automatic scrolling, i.e. automatic scrolling
will not scroll a window to a column less than the specified one.