<!--
    This is the NZB 1.1 DTD; a simple XML format for describing
    collections of one or more files located on Usenet.

    Namespace = http://www.newzbin.com/2003/nzb

    This DTD is identified by the PUBLIC and SYSTEM identifiers:

      PUBLIC "-//newzBin//DTD NZB 1.1//EN"
      SYSTEM "http://www.newzbin.com/DTD/nzb/nzb-1.1.dtd"

    Clients are expected to handle extensions to this specification.
    If you're not parsing it with a reasonable XML parser and coping
    with elements and attributes your client doesn't know about, well,
    your client is broken.
-->

<!-- a Uniform Resource Identifier as per [RFC2396] -->
<!ENTITY % URI "CDATA">

<!-- an integer, in this case a positive one -->
<!ENTITY % Integer "CDATA">

<!-- date and time in standard Unix timestamp format -->
<!ENTITY % Unixtime "CDATA">


<!ELEMENT nzb (head?,file*)>
<!ATTLIST nzb
  xmlns      %URI;          #FIXED 'http://www.newzbin.com/DTD/2003/nzb'
  >

<!-- zero or one header section per nzb, contains metadata for contents
     -->
<!ELEMENT head (meta)*>

<!-- exactly one metadata element per item of arbitrary metadata.

    type - An identifier for this metadata
           Some types are pre-defined,
	   see http://docs.newzbin.com/index.php/Newzbin:NZB_Specs
    -->
<!ELEMENT meta (#PCDATA)*>
<!ATTLIST meta
   type      CDATA          #REQUIRED
   >

<!-- exactly one file element per file, with exactly zero or one
     set of groups and/or segments associated with it  
     
    subject - Subject this file was posted under
    poster - The From: header the file was posted with
    date - A unix timestamp representing the time the file was first seen 
    -->
<!ELEMENT file (groups,segments)?>
<!ATTLIST file
  subject    CDATA          #REQUIRED
  poster     CDATA          #IMPLIED
  date       %Unixtime;     #IMPLIED
  >

<!-- the collection of newsgroups this file is known to be in -->
<!ELEMENT groups (group)*>
<!ATTLIST groups>

<!-- one group element per newsgroup,
     containing text is the group name -->
<!ELEMENT group (#PCDATA)>
<!ATTLIST group>

<!-- the collection of Usenet articles this file is made up from -->
<!ELEMENT segments (segment)*>
<!ATTLIST segments>


<!-- a Usenet article containing at least part of this file. 

    bytes - Byte-count of the article
    number - Segment number
    -->
<!ELEMENT segment (#PCDATA)>
<!ATTLIST segment
  bytes      %Integer;      #IMPLIED
  number     %Integer;      #IMPLIED
  >