DEFVAR_PER_BUFFER ("vertical-scroll-bar", ¤t_buffer->vertical_scroll_bar_type,
Qnil,
doc: /* *Position of this buffer's vertical scroll bar.
-The value takes effect whenever you display this buffer in a window.
+The value takes effect whenever you tell a window to display this buffer;
+for instance, with `set-window-buffer' when or `display-buffer' displays it.
+
A value of `left' or `right' means put the vertical scroll bar at that side
of the window; a value of nil means don't show any vertical scroll bars.
A value of t (the default) means do whatever the window's frame specifies. */);