@end defun
@defvar history-add-new-input
-The value of this variable @code{nil} means that standard functions
-that read from the minibuffer don't add new elements to the history
-list, so it is possible to do this explicitly by using @code{add-to-history}.
+If the value of this variable is @code{nil}, standard functions that
+read from the minibuffer don't add new elements to the history list.
+This lets Lisp programs explicitly manage input history by using
+@code{add-to-history}. By default, @code{history-add-new-input} is
+set to a non-@code{nil} value.
@end defvar
@defvar history-length