@defvar left-margin-width
This variable specifies the width of the left margin, in character
-cell units. It is buffer-local in all buffers. A value of @code{nil}
-means no left marginal area.
+cell (a.k.a.@: ``column'') units. It is buffer-local in all buffers.
+A value of @code{nil} means no left marginal area.
@end defvar
@defvar right-margin-width
@defun set-window-margins window left &optional right
This function specifies the margin widths for window @var{window}, in
-character cell (a.k.a.@: ``column''), units. The argument @var{left}
-controls the left margin and @var{right} controls the right margin
-(default @code{0}).
+character cell units. The argument @var{left} controls the left
+margin, and @var{right} controls the right margin (default @code{0}).
@end defun
@defun window-margins &optional window
This function returns the width of the left and right margins of
@var{window} as a cons cell of the form @w{@code{(@var{left}
. @var{right})}}. If one of the two marginal areas does not exist,
-its width is returned as @code{nil}; if none of the two margins exist,
+its width is returned as @code{nil}; if neither of the two margins exist,
the function returns @code{(nil)}. If @var{window} is @code{nil}, the
selected window is used.
@end defun