+@node Extensible Streams
+@comment node-name, next, previous, up
+@chapter Extensible Streams
+
SBCL supports @dfn{Gray streams}, user-overloadable CLOS classes whose
instances can be used as Lisp streams (e.g. passed as the first
argument to @code{format}). Additionally, the bundled contrib module
simple-streams proposal.
@menu
-* Gray Streams::
-* Simple Streams::
+* Gray Streams::
+* Simple Streams::
@end menu
@node Gray Streams