; * doc/lispref/control.texi (Generators): Fix typo.

diff --git a/doc/lispref/control.texi b/doc/lispref/control.texi
index 9035e7f6bbc06d84e60ca80069bc690c1e42a4f3..3c874ee3fe0d33e4b50b752ed5380d4c8374f20c 100644 (file)
--- a/doc/lispref/control.texi
+++ b/doc/lispref/control.texi
@@ -1534,7 +1534,7 @@ iterator with @code{iter-next} for anything interesting to happen.
 Each call to a generator function produces a @emph{different}
 iterator, each with its own state.
 
-@defun iter-next iterator value
+@defun iter-next iterator &optional value
 Retrieve the next value from @var{iterator}.  If there are no more
 values to be generated (because @var{iterator}'s generator function
 returned), @code{iter-next} signals the @code{iter-end-of-sequence}