change 14.21 Expires

Add the following paragraph to the end of 14.21:

	The presence of an Expires header on an response that otherwise would
by default
	be non-cacheable overrides the default and makes it cacheable.


Reason:
This is for consistency with (old) section 13.7.1, and to make sure that
all the semantics of Expires are in one place.
----------------------------------------------------
Paul J. Leach            Email: paulle@microsoft.com
Microsoft                Phone: 1-206-882-8080
1 Microsoft Way          Fax:   1-206-936-7329
Redmond, WA 98052

Received on Friday, 7 June 1996 14:53:49 UTC