<!-- ============================================================= -->
<!--  MODULE:    XML Special Characters Module                     -->
<!--  VERSION:   3.0                                               -->
<!--  DATE:      Feb 2008                                          -->
<!-- ============================================================= -->

<!-- ============================================================= -->
<!--                    PUBLIC DOCUMENT TYPE DEFINITION            -->
<!--                        TYPICAL INVOCATION                     -->
<!--
"-//NLM//DTD Archiving and Interchange DTD Suite XML Special Characters Module v3.0 20080202//EN"
     Delivered as file "xmlspecchars.ent"                          -->
<!-- ============================================================= -->

<!-- ============================================================= -->
<!-- SYSTEM:     Archiving and Interchange DTD Suite               -->
<!--                                                               -->
<!-- PURPOSE:    External Parameter Entities for calling in the    -->
<!--             special character entities                        -->
<!--                                                               -->
<!-- CONTAINS:   1) Calls to external entity sets                  -->
<!--                                                               -->
<!-- MODULES REQUIRED:                                             -->
<!--             The standard ISO special character entity sets    -->
<!--             (see below)                                       -->
<!--                                                               -->
<!-- CREATED FOR:                                                  -->
<!--             Digital archives and publishers who wish to       -->
<!--             create a custom XML DTD for original markup of    -->
<!--             journal literature, books, and related material,  -->
<!--             or for archiving and transferring such material   -->
<!--             between archives.                                 -->
<!--                                                               -->
<!--             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 Archiving and     -->
<!--                Interchange 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 Archiving and Interchange DTD Suite."  -->
<!--                                                               -->
<!--             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 Archiving and Interchange DTD    --> 
<!--                    Suite."                                    -->
<!--                                                               -->
<!--             Suggestions for refinements and enhancements to   -->
<!--             the DTD suite should be sent in email to:         -->
<!--                 archive-dtd@ncbi.nlm.nih.gov                  -->
<!--                                                               -->
<!-- ORIGINAL CREATION DATE:                                       -->
<!--             December 2002                                     -->
<!--                                                               -->
<!-- CREATED BY: Jeff Beck       (NCBI)                            -->
<!--             Deborah Lapeyre (Mulberry Technologies, Inc.)     -->
<!--             Bruce Rosenblum (Inera Inc.)                      -->
<!--                                                               -->
<!--             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    -->
<!--             Bruce Rosenblum's collaboration with other DTD    -->
<!--             authors in completing Version 1.0. The Andrew W.  --> 
<!--             Mellon Foundation provided support for these      --> 
<!--             important contributions.                          -->
<!--                                                               -->
<!-- ============================================================= -->


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

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

     =============================================================
     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"              -->


<!-- ============================================================= -->
<!--                    ENTITY SETS FROM INFORMATIVE ANNEX TO      --> 
<!--                       ISO 8879:1986 (SGML)                    -->
<!-- ============================================================= -->


<!--                    ISO STANDARD ADDED LATIN 1                 -->
<!ENTITY % ISOlat1 PUBLIC
"-//W3C//ENTITIES Added Latin 1 for MathML 2.0//EN"
"iso8879/isolat1.ent"                                                >


<!--                    ISO STANDARD ADDED LATIN 2                 -->
<!ENTITY % ISOlat2 PUBLIC
"-//W3C//ENTITIES Added Latin 2 for MathML 2.0//EN"
"iso8879/isolat2.ent"                                                >


<!--                    ISO BOX AND LINE DRAWING                   -->
<!ENTITY % ISObox       PUBLIC 
"-//W3C//ENTITIES Box and Line Drawing for MathML 2.0//EN"
"iso8879/isobox.ent"                                                 >


<!--                    ISO STANDARD DIACRITICAL MARKS             -->
<!ENTITY % ISOdia PUBLIC
"-//W3C//ENTITIES Diacritical Marks for MathML 2.0//EN"
"iso8879/isodia.ent"                                                 >


<!--                    ISO STANDARD NUMERIC AND SPECIAL GRAPHIC   -->
<!ENTITY % ISOnum PUBLIC
"-//W3C//ENTITIES Numeric and Special Graphic for MathML 2.0//EN"
"iso8879/isonum.ent"                                                 >


<!--                    ISO STANDARD PUBLISHING                    -->
<!ENTITY % ISOpub PUBLIC
"-//W3C//ENTITIES Publishing for MathML 2.0//EN"
"iso8879/isopub.ent"                                                 >


<!--                    ISO STANDARD RUSSIAN CYRILLIC              -->
<!ENTITY % ISOcyr1 PUBLIC 
"-//W3C//ENTITIES Russian Cyrillic for MathML 2.0//EN"
"iso8879/isocyr1.ent"                                                >


<!--                    ISO STANDARD NON-RUSSIAN CYRILLIC          -->
<!ENTITY % ISOcyr2 PUBLIC
"-//W3C//ENTITIES Non-Russian Cyrillic for MathML 2.0//EN"
"iso8879/isocyr2.ent"                                                >


<!-- ============================================================= -->
<!--                    ISO 8879 NOT USED BY MATHML                -->
<!-- ============================================================= -->


<!--                    ISO STANDARD GREEK LETTERS                 -->
<!ENTITY % ISOgrk1 PUBLIC
"-//W3C//ENTITIES Greek Letters//EN"
"xmlchars/isogrk1.ent"                                               >


<!--                    ISO STANDARD MONOTONIKO GREEK              -->
<!ENTITY % ISOgrk2 PUBLIC
"-//W3C//ENTITIES Monotoniko Greek//EN"
"xmlchars/isogrk2.ent"                                               >


<!--                    ISO STANDARD ALTERNATIVE GREEK SYMBOLS     -->
<!ENTITY % ISOgrk4 PUBLIC
"-//W3C//ENTITIES Alternative Greek Symbols//EN"
"xmlchars/isogrk4.ent"                                               >


<!-- ============================================================= -->
<!--                    ISO TECHNICAL REPORT 9573-13 ENTITY SETS   -->
<!-- ============================================================= -->


<!--                    ISO STANDARD GENERAL TECHNICAL             -->
<!ENTITY % ISOtech PUBLIC
"-//W3C//ENTITIES General Technical for MathML 2.0//EN"
"iso9573-13/isotech.ent"                                             >


<!--                    ISO STANDARD GREEK SYMBOLS                 -->
<!ENTITY % ISOgrk3 PUBLIC
"-//W3C//ENTITIES Greek Symbols for MathML 2.0//EN"
"iso9573-13/isogrk3.ent"                                             >


<!--                    ISO STANDARD MATH ALPHABETS (SCRIPT)       -->
<!ENTITY % ISOmscr PUBLIC
"-//W3C//ENTITIES Math Alphabets: Script for MathML 2.0//EN"
"iso9573-13/isomscr.ent"                                             >


<!--                    ISO STANDARD ADDED MATH SYMBOLS 
                           (ARROW RELATIONS)                       -->
<!ENTITY % ISOamsa PUBLIC
"-//W3C//ENTITIES Added Math Symbols: Arrow Relations for MathML 2.0//EN"
"iso9573-13/isoamsa.ent"                                             >


<!--                    ISO STANDARD ADDED MATH SYMBOLS 
                           (BINARY OPERATORS)                      -->
<!ENTITY % ISOamsb PUBLIC 
"-//W3C//ENTITIES Added Math Symbols: Binary Operators for MathML 2.0//EN" 
"iso9573-13/isoamsb.ent"                                             >


<!--                    ISO STANDARD ADDED MATH SYMBOLS 
                           (DELIMITERS)                            -->
<!ENTITY % ISOamsc PUBLIC 
"-//W3C//ENTITIES Added Math Symbols: Delimiters for MathML 2.0//EN"
"iso9573-13/isoamsc.ent"                                             >


<!--                    ISO STANDARD ADDED MATH SYMBOLS 
                           (NEGATED RELATIONS)                     -->
<!ENTITY % ISOamsn PUBLIC 
"-//W3C//ENTITIES Added Math Symbols: Negated Relations for MathML 2.0//EN"
"iso9573-13/isoamsn.ent"                                             >


<!--                    ISO STANDARD ADDED MATH SYMBOLS (ORDINARY) -->
<!ENTITY % ISOamso PUBLIC 
"-//W3C//ENTITIES Added Math Symbols: Ordinary for MathML 2.0//EN"
"iso9573-13/isoamso.ent"                                             >


<!--                    ISO STANDARD ADDED MATH SYMBOLS 
                           (RELATIONS)                             -->
<!ENTITY % ISOamsr PUBLIC 
"-//W3C//ENTITIES Added Math Symbols: Relations for MathML 2.0//EN"
"iso9573-13/isoamsr.ent"                                             >


<!--                    ISO STANDARD MATH ALPHABETS (FRAKTUR)      -->
<!ENTITY % ISOmfrk PUBLIC
"-//W3C//ENTITIES Math Alphabets: Fraktur for MathML 2.0//EN"
"iso9573-13/isomfrk.ent"                                             >


<!--                    ISO STANDARD MATH ALPHABETS (OPEN FACE)    -->
<!ENTITY % ISOmopf PUBLIC
"-//W3C//ENTITIES Math Alphabets: Open Face for MathML 2.0//EN"
"iso9573-13/isomopf.ent"                                             >


<!-- ============================================================= -->
<!--                    ISO SPECIAL CHARACTER SETS INVOKED         -->
<!-- ============================================================= -->


%ISOlat1;
%ISOlat2;
%ISObox;
%ISOdia;
%ISOnum;
%ISOpub;
%ISOcyr1;
%ISOcyr2;

%ISOgrk1;
%ISOgrk2;
%ISOgrk4;

%ISOtech;
%ISOgrk3;
%ISOamsa;
%ISOamsb;
%ISOamsc;
%ISOamsn;
%ISOamso;
%ISOamsr;
%ISOmscr;
%ISOmfrk; 
%ISOmopf;


<!--                    MAINTENANCE NOTE:
                        Custom special characters are declared 
                        in a separate module %chars.ent;           -->


<!-- ============ End of XML Special Characters Module =========== -->
