[Docs] [txt|pdf] [Tracker] [Email] [Diff1] [Diff2] [Nits]

Versions: 00 01 02 03 04 05 06 07 08 09 10 11 12

Network Working Group                                           J. Snell
Internet-Draft                                            March 19, 2007
Intended status: Standards Track
Expires: September 20, 2007


              Atom Publishing Protocol Features Extension
                   draft-snell-atompub-feature-02.txt

Status of this Memo

   By submitting this Internet-Draft, each author represents that any
   applicable patent or other IPR claims of which he or she is aware
   have been or will be disclosed, and any of which he or she becomes
   aware will be disclosed, in accordance with Section 6 of BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt.

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html.

   This Internet-Draft will expire on September 20, 2007.

Copyright Notice

   Copyright (C) The IETF Trust (2007).

Abstract

   This document introduces extensions to the Atom Publishing Protocol
   introspection format for expressing metadata about the behaviors,
   functions and capabilities supported by an Atom Publishing Protocol
   server implementation.







Snell                  Expires September 20, 2007               [Page 1]


Internet-Draft                APP Features                    March 2007


Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Notational Conventions . . . . . . . . . . . . . . . . . . . .  3
   3.  Feature Introspection and the 'f:feature' element  . . . . . .  3
     3.1.  Example  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   4.  Publishing Controls and the 'f:control' element  . . . . . . .  5
     4.1.  Example  . . . . . . . . . . . . . . . . . . . . . . . . .  7
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . .  7
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  8
     6.1.  Registry of Features and Controls  . . . . . . . . . . . .  8
       6.1.1.  Initial Assignments  . . . . . . . . . . . . . . . . .  8
   7.  Normative References . . . . . . . . . . . . . . . . . . . . . 15
   Appendix A.  Acknowledgements  . . . . . . . . . . . . . . . . . . 15
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 15
   Intellectual Property and Copyright Statements . . . . . . . . . . 17



































Snell                  Expires September 20, 2007               [Page 2]


Internet-Draft                APP Features                    March 2007


1.  Introduction

   This document introduces extensions for the Atom Publishing Protocol
   introspection format for expressing metadata about the behaviors,
   functions and capabilities supported by an Atom Publishing Protocol
   server implementation.


2.  Notational Conventions

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in BCP 14, [RFC2119].

   This specification uses XML Namespaces [W3C.REC-xml-names-19990114]
   to uniquely identify XML element names.  It uses the following
   namespace prefix for the indicated namespace URI;

     "f": "http://purl.org/atompub/features/1.0"

   This specification uses terms from the XML Infoset
   [W3C.REC-xml-infoset-20040204].  However, this specification uses a
   shorthand; the phrase "Information Item" is omitted when naming
   Element Information Items.  Therefore, when this specification uses
   the terms "element" and "attribute" it is referring, respectively, to
   the Element and Attribute Information Items in Infoset terms.


3.  Feature Introspection and the 'f:feature' element

   A feature is an abstract behavior, function and capability supported
   by an Atom Publishing Protocol server.  Examples of features that
   might be supported by an APP server include support for draft
   entries, scheduled publication of entries, use of a particular set of
   Atom format extensions, use of a particular authentication scheme,
   and so on.  The presence of a f:feature element in an app:collection
   element is an indication that the collection supports the feature
   specified and may require that a client wishing to use the endpoint
   use that feature.  Features are identified using permanent,
   universally unique IRI's.

     feature = element f:feature {
       atomCommonAttributes,
       attribute ref { atomUri },
       attribute required { 'yes' | 'no' }?,
       attribute href { atomURI }?,
       attribute label { text }?,
       (extensionElement*)



Snell                  Expires September 20, 2007               [Page 3]


Internet-Draft                APP Features                    March 2007


     }

   The "ref" attribute specifies an globally unique IRI identifying a
   feature supported by a collection.  The value of the ref attribute
   MUST be compared on a case-sensitive, character-by-character basis.
   Relative references MUST NOT be used.

   A 'required' attribute value of "yes" indicates that clients MUST
   utilize the identified feature when interacting with the collection.
   A server MAY reject requests from clients that do not support or use
   the feature.  If not specified, the value is assumed to be "no".

   An optional 'href' attribute MAY be used to specify the URI of a
   human-readable description of the feature.  Relative references MAY
   be used.

   The optional 'label' attribute MAY be used to specify a human-
   readable label for the feature.  The value of the 'label' attribute
   is Language-Sensitive as defined by Section 2 of [RFC4287].

   The f:feature element MAY contain child elements and attributes other
   than those defined in this specification.  Such "foreign markup" are
   considered to be metadata applicable to the feature identified by the
   f:feature element.  Software agents MUST NOT stop processing or
   signal an error or change their behavior as a result of encountering
   such foreign markup.

   An app:collection element MAY contain zero or more f:feature elements
   but MUST NOT contain more than one with the same ref attribute value.
   The order in which f:feature elements appears is insignificant.





















Snell                  Expires September 20, 2007               [Page 4]


Internet-Draft                APP Features                    March 2007


3.1.  Example

   The following is an example of a collection supporting one required
   and one optional feature.

     <service xmlns="...">
       <workspace title="My Atom Service">
         <collection title="My Atom Collection" href="...">
           ...
           <f:feature ref="http://example.org/features/drafts" />
           <f:feature ref="http://example.org/features/changetracking"
             href="http://example.org/features/changetracking.html"
             label="Change Tracking">
             <rh:history xmlns:rh="..." href="revisionhistory.xml" />
           </f:feature>
           <f:feature ref="http://code.google.com/apis/gdata/"
             href="http://code.google.com/apis/gdata/"
             label="Google Data API"
             required="yes" />
         </collection>
       </workspace>
     </app:server>


4.  Publishing Controls and the 'f:control' element

   Publishing Controls are a mechanism provided by the Atom Publishing
   Protocol to embed metadata within atom:entry elements designed to
   influence the way a server processes the entry.  The app:control
   element is provided as a convenient container for this metadata
   within an atom:entry.  The Atom Publishing Protocol does not define a
   mechanism by which clients can discover which publishing controls a
   server supports.

   The presence of a f:control element in an app:collection element is
   an indication that the collection supports the control and may
   require that a client wishing to use the endpoint use that control.
   Controls are identified using permanent, universally unique IRI's.

     control = element f:control {
       atomCommonAttributes,
       attribute ref { atomUri },
       attribute required { 'yes' | 'no' }?,
       attribute href { atomURI }?,
       attribute label { text }?,
       (extensionElement*)
     }




Snell                  Expires September 20, 2007               [Page 5]


Internet-Draft                APP Features                    March 2007


   The "ref" attribute specifies an globally unique IRI identifying a
   control supported by a collection.  The value of the ref attribute
   MUST be compared on a case-sensitive, character-by-character basis.
   Relative references MUST NOT be used.

   A 'required' attribute value of "yes" indicates that clients MUST
   utilize the identified control when interacting with the collection.
   A server MAY reject requests from clients that do not support or use
   the control.  If not specified, the value is assumed to be "no".

   An optional 'href' attribute MAY be used to specify the URI of a
   human-readable description of the control.  Relative references MAY
   be used.

   The optional 'label' attribute MAY be used to specify a human-
   readable label for the control.  The value of the 'label' attribute
   is Language-Sensitive as defined by Section 2 of [RFC4287].

   The f:control element MAY contain child elements and attributes other
   than those defined in this specification.  Such "foreign markup" are
   considered to be metadata applicable to the control identified by the
   f:control element.  Software agents MUST NOT stop processing or
   signal an error or change their behavior as a result of encountering
   such foreign markup.

   An app:collection element MAY contain zero or more f:control elements
   but MUST NOT contain more than one with the same ref attribute value.
   The order in which f:control elements appear is insignificant.























Snell                  Expires September 20, 2007               [Page 6]


Internet-Draft                APP Features                    March 2007


4.1.  Example

   The following is an example of a collection supporting one required
   and one optional control.

     <service xmlns="...">
       <workspace title="My Weblog">
         <collection title="My Entries" href="...">
           ...
           <f:control ref="http://purl.org/atom/app#draft"
                      required="yes" />
           <f:control ref="http://example.org/transforms"
                      required="no">
             <x:transforms xmlns:x="http://example.org/transforms">
               <x:transform>markdown</x:transform>
               <x:transform>wiki</x:transform>
               <x:transform>line-breaks</x:transform>
               <x:none>
             </x:states>
           </f:feature>
         </collection>
       </workspace>
     </app:server>

   An example atom:entry using the listed controls could appear as:

     <entry xmlns="http://www.w3.org/2005/Atom">
       ...
       <control xmlns="...">
         <draft>yes</draft>
         <f:transform>markdown</f:transform>
         <f:transform>line-breaks</f:transform>
       </control>
       ...
     </entry>


5.  Security Considerations

   Specific features and controls supported by a collection may
   introduce security considerations and concerns beyond those discussed
   by the Atom Publishing Protocol and Atom Syndication Format
   specifications.  Implementors must refer to the specifications and
   description of each feature and control to determine the security
   considerations relevant to each.






Snell                  Expires September 20, 2007               [Page 7]


Internet-Draft                APP Features                    March 2007


6.  IANA Considerations

6.1.  Registry of Features and Controls

   The Registry of Features and Controls is maintained by IANA and
   contains information about known features and controls that can be
   supported by Atom Publishing Protocol implementations.  New
   assignments are subject to IESG approval, as outlined in [RFC2434].
   Requests should be made by email to IANA, which will then forward the
   request to the IESG, requesting approval.  The request should use the
   following template:

   o  Type: ("Control" or "Feature")
   o  Ref: (A globally unique IRI identifying the control or feature)
   o  Label: (A human-readable label for the feature)
   o  Description:
   o  Href: (A URI referencing a document containing a detailed
      definition of the control or feature)
   o  Security Considerations:

6.1.1.  Initial Assignments

   The Registry of Features and Controls initially contains the
   following assignments:

6.1.1.1.  Drafts - http://purl.org/atom/app#drafts

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#drafts
   o  Label: Drafts
   o  Description: The "Drafts" feature indicates that a collection
      supports the use of the app:draft control element as defined in
      section 13.1.1 of [I-D.ietf-atompub-protocol].
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.2.  Preserve Entries - http://purl.org/atom/app#preserve-entry

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#preserve-entry
   o  Label: Preserve Entries
   o  Description: The "Preserve Entries" feature indicates that a
      server will preserve the semantic content of entries POST and PUT
      to the collection without modification.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt




Snell                  Expires September 20, 2007               [Page 8]


Internet-Draft                APP Features                    March 2007


   o  Security Considerations:

6.1.1.3.  Preserve IDs - http://purl.org/atom/app#preserve-id

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#preserve-id
   o  Label: Preserve IDs
   o  Description: The "Preserve IDs" feature indicates that a server
      will preserve the atom:id of entries POSTed to a collection.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.4.  XHTML Content - http://purl.org/atom/app#xhtml-content

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#xhtml-content
   o  Label: XHTML Content
   o  Description: The "XHTML Content" feature indicates that a server
      will accept XHTML within the atom:content element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.5.  HTML Content - http://purl.org/atom/app#html-content

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#html-content
   o  Label: HTML Content
   o  Description: The "HTML Content" feature indicates that a server
      will accept escaped HTML within the atom:content element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.6.  Text Content - http://purl.org/atom/app#text-content

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#text-content
   o  Label: Text Content
   o  Description: The "Text Content" feature indicates that a server
      will accept plain text within the atom:content element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:






Snell                  Expires September 20, 2007               [Page 9]


Internet-Draft                APP Features                    March 2007


6.1.1.7.  Binary Content - http://purl.org/atom/app#binary-content

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#xhtml-content
   o  Label: Binary Content
   o  Description: The "Binary Content" feature indicates that a server
      will accept Base-64 encoded binary data within the atom:content
      element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.8.  Referenced Content - http://purl.org/atom/app#ref-content

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#ref-content
   o  Label: XHTML Content
   o  Description: The "Referenced Content" feature indicates that a
      server will accept atom:content elements that use the src
      attribute to reference external content resources.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.9.  XHTML Title - http://purl.org/atom/app#xhtml-title

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#xhtml-title
   o  Label: XHTML Title
   o  Description: The "XHTML Title" feature indicates that a server
      will accept XHTML within the atom:title element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.10.  HTML Title - http://purl.org/atom/app#html-title

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#html-title
   o  Label: HTML Title
   o  Description: The "HTML Content" feature indicates that a server
      will accept escaped HTML within the atom:title element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:






Snell                  Expires September 20, 2007              [Page 10]


Internet-Draft                APP Features                    March 2007


6.1.1.11.  Text Title - http://purl.org/atom/app#text-title

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#text-title
   o  Label: Text Title
   o  Description: The "Text Content" feature indicates that a server
      will accept plain text within the atom:title element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.12.  XHTML Summary - http://purl.org/atom/app#xhtml-summary

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#xhtml-summary
   o  Label: XHTML Summary
   o  Description: The "XHTML Summary" feature indicates that a server
      will accept XHTML within the atom:summary element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.13.  HTML Summary - http://purl.org/atom/app#html-summary

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#html-summary
   o  Label: HTML Summary
   o  Description: The "HTML Summary" feature indicates that a server
      will accept escaped HTML within the atom:summary element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.14.  Text Summary - http://purl.org/atom/app#text-summary

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#text-summary
   o  Label: Text Summary
   o  Description: The "Text Summary" feature indicates that a server
      will accept plain text within the atom:summary element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.15.  Auto Summary - http://purl.org/atom/app#auto-summary






Snell                  Expires September 20, 2007              [Page 11]


Internet-Draft                APP Features                    March 2007


   o  Type: Feature
   o  Ref: http://purl.org/atom/app#auto-summary
   o  Label: Auto Summary
   o  Description: The "Auto Summary" feature indicates that a server
      will autogenerate the value of the atom:summary element and will
      either reject or ignore attempts by the client to modify the value
      of atom:summary.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.16.  XHTML Rights - http://purl.org/atom/app#xhtml-rights

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#xhtml-rights
   o  Label: XHTML Rights
   o  Description: The "XHTML Rights" feature indicates that a server
      will accept XHTML within the atom:rights element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.17.  HTML Rights - http://purl.org/atom/app#html-rights

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#html-rights
   o  Label: HTML Rights
   o  Description: The "HTML Rights" feature indicates that a server
      will accept escaped HTML within the atom:rights element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.18.  Text Rights - http://purl.org/atom/app#text-rights

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#text-rights
   o  Label: Text Rights
   o  Description: The "Text Rights" feature indicates that a server
      will accept plain text within the atom:rights element.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.19.  Authenticated Author - http://purl.org/atom/app#auth-author






Snell                  Expires September 20, 2007              [Page 12]


Internet-Draft                APP Features                    March 2007


   o  Type: Feature
   o  Ref: http://purl.org/atom/app#auth-author
   o  Label: Authenticated Author
   o  Description: The "Authenticated Author" feature indicates that a
      server will use the authenticated identity of the client to
      determine the values to use within the atom:author element.
      Attempts by a client to manually set or modify the author
      information will either be rejected or ignored by the server.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.20.  Preserve Updated - http://purl.org/atom/app#preserve-updated

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#preserve-updated
   o  Label: Preserve Updated
   o  Description: The "Preserve Updated" feature indicates that a
      server will preserve the value of the atom:updated element
      provided by a client.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.21.  Preserve Extensions -
           http://purl.org/atom/app#preserve-extensions

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#preserve-extensions
   o  Label: Preserve Extensions
   o  Description: The "Preserve Extensions" feature indicates that a
      server will preserve arbitrary unknown foreign markup contained
      within an entry.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.22.  Preserve Links - http://purl.org/atom/app#preserve-links

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#preserve-links
   o  Label: Preserve Links
   o  Description: The "Preserve Links" feature indicates that a server
      will preserve all atom:link elements contained within an entry.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt





Snell                  Expires September 20, 2007              [Page 13]


Internet-Draft                APP Features                    March 2007


   o  Security Considerations:

6.1.1.23.  Slug - http://purl.org/atom/app#slug

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#slug
   o  Label: Slug
   o  Description: The "Slug" feature indicates that a server will use
      the Slug request header defined in section 9.7 of
      [I-D.ietf-atompub-protocol] to set the URI of newly created
      resources.
   o  Security Considerations:

6.1.1.24.  Multiple Categories -
           http://purl.org/atom/app#multiple-categories

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#multiple-categories
   o  Label: Multiple Categories
   o  Description: The "Multiple Categories" feature indicates that a
      server will accept entries that contain multiple atom:category
      elements.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.25.  Contributors - http://purl.org/atom/app#contributors

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#contributors
   o  Label: Contributors
   o  Description: The "Contributors" feature indicates that a server
      will accept and preserve atom:contributor elements contained by an
      entry.
   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:

6.1.1.26.  Multiple Authors - http://purl.org/atom/app#multiple-authors

   o  Type: Feature
   o  Ref: http://purl.org/atom/app#multiple-authors
   o  Label: Multiple Authors
   o  Description: The "Multiple Authors" feature indicates that a
      server will accept and preserve multiple atom:author elements
      contained by an entry.





Snell                  Expires September 20, 2007              [Page 14]


Internet-Draft                APP Features                    March 2007


   o  Href: http://www.ietf.org/internet-drafts/
      draft-ietf-atompub-protocol-14.txt
   o  Security Considerations:


7.  Normative References

   [I-D.ietf-atompub-protocol]
              Hora, B. and J. Gregorio, "The Atom Publishing Protocol",
              draft-ietf-atompub-protocol-14 (work in progress),
              March 2007.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2434]  Narten, T. and H. Alvestrand, "Guidelines for Writing an
              IANA Considerations Section in RFCs", BCP 26, RFC 2434,
              October 1998.

   [RFC4287]  Nottingham, M., Ed. and R. Sayre, Ed., "The Atom
              Syndication Format", RFC 4287, December 2005.

   [W3C.REC-xml-infoset-20040204]
              Cowan, J. and R. Tobin, "XML Information Set (Second
              Edition)", World Wide Web Consortium Recommendation REC-
              xml-infoset-20040204, February 2004,
              <http://www.w3.org/TR/2004/REC-xml-infoset-20040204>.

   [W3C.REC-xml-names-19990114]
              Layman, A., Hollander, D., and T. Bray, "Namespaces in
              XML", World Wide Web Consortium FirstEdition REC-xml-
              names-19990114, January 1999,
              <http://www.w3.org/TR/1999/REC-xml-names-19990114>.


Appendix A.  Acknowledgements

   The author acknowledges the feedback from Elias Torres, Robert Yates,
   David Johnson, Byrne Reese, Joe Gregorio and the other members of the
   IETF Atom Publishing working group during the development of this
   specification.










Snell                  Expires September 20, 2007              [Page 15]


Internet-Draft                APP Features                    March 2007


Author's Address

   James M Snell


   Phone:
   Email: jasnell@gmail.com
   URI:   http://snellspace.com











































Snell                  Expires September 20, 2007              [Page 16]


Internet-Draft                APP Features                    March 2007


Full Copyright Statement

   Copyright (C) The IETF Trust (2007).

   This document is subject to the rights, licenses and restrictions
   contained in BCP 78, and except as set forth therein, the authors
   retain all their rights.

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND
   THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF
   THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.


Intellectual Property

   The IETF takes no position regarding the validity or scope of any
   Intellectual Property Rights or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; nor does it represent that it has
   made any independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can be
   found in BCP 78 and BCP 79.

   Copies of IPR disclosures made to the IETF Secretariat and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementers or users of this
   specification can be obtained from the IETF on-line IPR repository at
   http://www.ietf.org/ipr.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights that may cover technology that may be required to implement
   this standard.  Please address the information to the IETF at
   ietf-ipr@ietf.org.


Acknowledgment

   Funding for the RFC Editor function is provided by the IETF
   Administrative Support Activity (IASA).





Snell                  Expires September 20, 2007              [Page 17]


Html markup produced by rfcmarkup 1.129c, available from https://tools.ietf.org/tools/rfcmarkup/