<!-- ============================================================= -->
<!--  MODULE:    Link Element Classes                              -->
<!--  VERSION:   ANSI/NISO JATS Version 1.0 (Z39.96-2012)          -->
<!--  DATE:      March 2012                                        -->
<!--                                                               -->
<!-- ============================================================= -->


<!-- ============================================================= -->
<!--                    PUBLIC DOCUMENT TYPE DEFINITION            -->
<!--                        TYPICAL INVOCATION                     -->
<!--
"-//NLM//DTD JATS (Z39.96) JATS DTD Suite Link Class Elements v1.0 20120330//EN"
     Delivered as file "JATS-link1.ent"                            -->
<!-- ============================================================= -->


<!-- ============================================================= -->
<!-- SYSTEM:     JATS DTD Suite                                    -->
<!--                                                               -->
<!-- PURPOSE:    Names all elements in the link class. These are   -->
<!--             elements that are links (internal or external)    -->
<!--             by definition, such as URLs <uri> and             -->
<!--             Cross(X)-references <xref>.                       -->
<!--                                                               -->
<!-- TAG SET SPONSOR                                               -->
<!--             National Center for Biotechnology                 -->
<!--                Information (NCBI)                             -->
<!--             National Library of Medicine (NLM)                -->
<!--                                                               -->
<!-- CREATED FOR:                                                  -->
<!--             This module was created for the JATS DTD Suite.   -->
<!--             Digital archives and publishers may use the       -->
<!--             DTD as is for markup of journal literature or     -->
<!--             related material for archiving and transferring   -->
<!--             such material between archives or create a        -->
<!--             custom XML DTD from the Suite for                 -->
<!--             these purposes.                                   -->
<!--                                                               -->
<!--             This DTD is in the public domain. An organization -->
<!--             that wishes to create its own DTD from the suite  -->
<!--             may do so without permission from NLM.            -->
<!--                                                               -->
<!--             The suite has been set up to be extended using a  -->
<!--             new DTD file and a new DTD-specific customization -->
<!--             module to redefine the many Parameter Entities.   -->
<!--             Do not modify the suite directly or redistribute  -->
<!--             modified versions of the suite.                   -->
<!--                                                               -->
<!--             In the interest of maintaining consistency and    -->
<!--             clarity for potential users, NLM requests:        -->
<!--                                                               -->
<!--             1. If you create a DTD from the JATS DTD Suite    -->
<!--                and intend to stay compatible with the suite,  -->
<!--                then please include the following statement    -->
<!--                as a comment in all of your DTD modules:       -->
<!--                   "Created from, and fully compatible with,   -->
<!--                    the ANSI/NISO Z39.96 Journal Article Tag   -->
<!--                    Suite (JATS)."                             -->
<!--                                                               -->
<!--             2. If you alter one or more modules of the suite, -->
<!--                then please rename your version and all its    -->
<!--                modules to avoid any confusion with the        -->
<!--                original suite. Also, please include the       -->
<!--                following statement as a comment in all your   -->
<!--                DTD modules:                                   -->
<!--                   "Based in part on, but not fully compatible -->
<!--                    with, the ANSI/NISO Z39.96 Journal Article -->
<!--                    Tag Suite (JATS)."                         -->
<!--                                                               -->
<!-- ORIGINAL CREATION DATE:                                       -->
<!--             December 2002                                     -->
<!--                                                               -->
<!-- CREATED BY: Mulberry Technologies, Inc. for the NISO Z39.96   -->
<!--             Working Group. Mulberry Technologies was          -->
<!--             supported by National Center for Biotechnology    -->
<!--             Information (NCBI), a center of the US National   -->
<!--             Library of Medicine (NLM).                        -->
<!--                                                               -->
<!--             This module is part of the JATS DTD Suite. The    -->
<!--             Suite is a continuation of work done by NCBI,     -->
<!--             Mulberry Technologies, and Inera, Inc. on the NLM -->
<!--             Journal Archiving and Interchange DTD Suite, which-->
<!--             was originally released in December, 2002.        -->
<!--                                                               -->
<!--             NLM thanks the Harvard University Libraries, both -->
<!--             for proposing that a draft archiving NLM DTD for  -->
<!--             life sciences journals be extended to accommodate -->
<!--             journals in all disciplines and for sponsoring    -->
<!--             Inera Inc.'s collaboration with other DTD         -->
<!--             authors in completing NLM Version 1.0. The        -->
<!--             Andrew W. Mellon Foundation provided support for  -->
<!--             these important contributions.                    -->
<!--                                                               -->
<!--             Suggestions for refinements and enhancements to   -->
<!--             this DTD should be sent in email to:              -->
<!--                 jats@ncbi.nlm.nih.gov                         -->
<!-- ============================================================= -->


<!-- ============================================================= -->
<!--                    DTD VERSION/CHANGE HISTORY                 -->
<!-- ============================================================= -->
<!--
     =============================================================

Version  Reason/Occasion                   (who) vx.x (yyyy-mm-dd)
   

     =============================================================
     NISO JATS Version 1.0             (DAL/BTU) v1.0 (2012-xx-xx)
   
     ANSI/NISO Z39.96-2012 (Version 1.0) 

     Details concerning ANSI/NISO Z39.96-2012 JATS-based DTDs, XSDs, 
     RNGs and supporting documentation are available at
           http://jats.nlm.nih.gov/1.0/
   
  5. Updated the DTD-version attribute to "1.0" and the formal
     public identifier to the date: "v1.0 20120330//EN".

     =============================================================
     Version 0.4                       (DAL/BTU) v0.4 (2011-01-31)
   
     This Tag Set is in the process of becoming a NISO standard.
     The version numbers are starting over from 0.4", as a Trial
     Use Draft, to be made into "Version 1.0" when the Tag Suite 
     becomes a NISO standard. Thus, the version number that would
     have been "NLM Version 3.1 Draft" has become NISO JATS
     "Version 0.4".

     Details on NISO Trial Use Draft Version 0.4 are available at
           http://jats.nlm.nih.gov/JATS-0.4.
   
  4. Updated the DTD-version attribute to "0.4" 
   
  3. Updated the public identifier to "v0.4 20110131", 
     modified the formal public identifier to include "JATS (Z39.96)",
     and the filename as delivered to include "JATS" and the
     new version number "0".

  2. ACCESSIBILITY - Added @alt to <xref> thru %xref-atts;

     =============================================================
     Version 3.0                       (DAL/BTU) v3.0 (2007-10-31)

     Version 3.0 is the first non-backward-compatible release.
     In addition to the usual incremental changes, some
     elements and attributes have been renamed and/or remodeled
     to better meet user needs and to increase tag set consistency.
     All module change histories are available through the Tag Suite
     web site at http://dtd.nlm.nih.gov.

     Details on version 3.0 are available at
           http://dtd.nlm.nih.gov/3.0.

  1. Updated public identifier to "v3.0 20080202//EN"              -->

<!-- ============================================================= -->
<!--                    DEFAULTS FOR ATTRIBUTE VALUES              -->
<!-- ============================================================= -->


<!--                    DEFAULT TYPE OF CROSS(X)-REFERENCE         -->
<!--                    Used to say to what the reference is pointing.
                        Values are, for example: Affiliation "aff",
                        or Figure "fig".                           -->
<!ENTITY % ref-types    "aff | app | author-notes | bibr |
                         boxed-text | chem | contrib | corresp |
                         disp-formula | fig | fn | kwd | list |
                         plate | scheme | sec | statement |
                         supplementary-material |
                         table | table-fn |
                         other"                                      >


<!-- ============================================================= -->
<!--                    DEFAULTS FOR ATTRIBUTE LISTS               -->
<!-- ============================================================= -->


<!--                    FOOTNOTE ATTRIBUTES                        -->
<!--                    Attribute list for Footnote element        -->
<!ENTITY % fn-atts
            "id         ID                                #IMPLIED
             symbol     CDATA                             #IMPLIED
             fn-type    CDATA                             #IMPLIED
             specific-use
                        CDATA                             #IMPLIED
             xml:lang   NMTOKEN                           #IMPLIED"  >


<!--                    INLINE SUPPLEMENTARY MATERIAL              -->
<!--                    Attribute list for inline supplementary
                        material                                   -->
<!ENTITY % inline-supplementary-material-atts
            "id         ID                                #IMPLIED
             content-type
                        CDATA                             #IMPLIED
             mimetype   CDATA                             #IMPLIED
             mime-subtype
                        CDATA                             #IMPLIED
             specific-use
                        CDATA                             #IMPLIED
             xml:lang   NMTOKEN                           #IMPLIED
             %might-link-atts;"                                      >


<!--                    TARGET ATTRIBUTES                          -->
<!--                    Attribute list for <target> element        -->
<!ENTITY % target-atts
            "id         ID                                #REQUIRED
             target-type
                        CDATA                             #IMPLIED
             specific-use
                        CDATA                             #IMPLIED
             xml:lang   NMTOKEN                           #IMPLIED"  >


<!--                    X(CROSS) REFERENCE ATTRIBUTES              -->
<!--                    Attribute list for cross references        -->
<!ENTITY % xref-atts
            "alt        CDATA                             #IMPLIED
             id         ID                                #IMPLIED
             ref-type   (%ref-types;)                     #IMPLIED
             rid        IDREFS                            #IMPLIED
             specific-use
                        CDATA                             #IMPLIED
             xml:lang   NMTOKEN                           #IMPLIED"  >


<!-- ============================================================= -->
<!--                    INTERNAL LINKS                             -->
<!-- ============================================================= -->


<!--                    FOOTNOTE MODEL                             -->
<!--                    Content model for Footnote <fn>            -->
<!ENTITY % fn-model     "(label?, (%just-para.class;)+ )"            >


<!--                    FOOTNOTE                                   -->
<!--                    Additional information concerning material in
                        a particular location in the text. This
                        material is not considered to be part of the
                        body of the text, but in addition to or a
                        commentary on the body.
                        Details at:
                        http://jats.nlm.nih.gov/archiving/tag-library/1.0/index.html?elem=fn
                        http://jats.nlm.nih.gov/publishing/tag-library/1.0/index.html?elem=fn
                        http://jats.nlm.nih.gov/articleauthoring/tag-library/1.0/index.html?elem=fn
                                                                   -->
<!ELEMENT  fn           %fn-model;                                   >
<!ATTLIST  fn
             %fn-atts;                                               >


<!--                    TARGET ELEMENTS                            -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        a <target>
                        Design Note: All inline mixes begin with an
                        OR bar, but since %link-elements; is an inline
                        mix, the OR bar is already there.          -->
<!ENTITY % target-elements
                        "%link-elements;"                            >


<!--                    TARGET OF AN INTERNAL LINK                 -->
<!--                    May be placed anywhere within textual
                        material such as a paragraph to provide a
                        location (anchor) to which a cross reference
                        can point
                        Details at:
                        http://jats.nlm.nih.gov/archiving/tag-library/1.0/index.html?elem=target
                        http://jats.nlm.nih.gov/publishing/tag-library/1.0/index.html?elem=target
                        http://jats.nlm.nih.gov/articleauthoring/tag-library/1.0/index.html?elem=target
                                                                   -->
<!ELEMENT  target       (#PCDATA %target-elements;)*                 >
<!ATTLIST  target
             %target-atts;                                           >


<!--                    X(CROSS) REFERENCE ELEMENTS                -->
<!--                    The elements that can be included along with
                        data characters inside the content model of
                        an <xref>
                        Design Note: All inline mixes begin with an
                        OR bar, but since %link-elements; is an inline
                        mix, the OR bar is already there.          -->
<!ENTITY % xref-elements
                        "%link-elements;"                            >


<!--                    X(CROSS) REFERENCE                         -->
<!--                    Used for any kind of internal article
                        referencing. The content of the reference
                        (if present) will be displayed as the link.
                        This element may be used to point to any
                        element that takes an "id" attribute.
                        The "ref-type" attribute may be used to name
                        the element or type of object to which the
                        <xref> is pointing.
                        Details at:
                        http://jats.nlm.nih.gov/archiving/tag-library/1.0/index.html?elem=xref
                        http://jats.nlm.nih.gov/publishing/tag-library/1.0/index.html?elem=xref
                        http://jats.nlm.nih.gov/articleauthoring/tag-library/1.0/index.html?elem=xref
                                                                   -->
<!ELEMENT  xref         (#PCDATA %xref-elements;)*                   >
<!ATTLIST  xref
             %xref-atts;                                             >


<!-- ============================================================= -->
<!--                    EXTERNAL LINKS                             -->
<!-- ============================================================= -->


<!--                    INLINE SUPPLEMENTARY MATERIAL ELEMENTS     -->
<!--                    Elements for use in the
                        <inline-supplementary-material> element    -->
<!ENTITY % inline-supplementary-material-elements
                        "| %access.class; | %address-link.class; |
                         %emphasis.class; |
                         %phrase-content.class; | %subsup.class;"    >


<!--                    INLINE SUPPLEMENTARY MATERIAL              -->
<!--                    An in-text link to an external file that
                        provides supplementary information for
                        the document, for example, an audio clip
                        Details at:
                        http://jats.nlm.nih.gov/archiving/tag-library/1.0/index.html?elem=inline-supplementary-material
                        http://jats.nlm.nih.gov/publishing/tag-library/1.0/index.html?elem=inline-supplementary-material
                        http://jats.nlm.nih.gov/articleauthoring/tag-library/1.0/index.html?elem=inline-supplementary-material
                                                                   -->
<!ELEMENT  inline-supplementary-material
                        (#PCDATA
                         %inline-supplementary-material-elements;)*  >
<!ATTLIST  inline-supplementary-material
             %inline-supplementary-material-atts;                    >


<!-- ================== End Link Class Module ==================== -->
