-@item @option{-O width=@var{character-count}}
-Width of a page, in characters. For screen output you may specify
-@code{auto} in place of a number to track the width of the terminal as
-it changes. Default: @code{79}.
+@item @option{-O width=@var{columns}}
+Width of a page, in columns. If unspecified or given as @code{auto},
+the default is the width of the terminal, for interactive output, or
+the WIDTH setting (@pxref{SET}), for output to a file.