<!– ============================================================= –> <!– MODULE: Math Class Elements –> <!– VERSION: 3.0.0 –> <!– DATE: Apr 2009 –> <!– –> <!– ============================================================= –>

<!– ============================================================= –> <!– PUBLIC DOCUMENT TYPE DEFINITION –> <!– TYPICAL INVOCATION –> <!– “-//Atypon//DTD Atypon Systems Archival NLM DTD Math Class Elements v3.0.0 20090430//EN”

Delivered as file "math3.ent"                                 -->

<!– ============================================================= –>

<!– ============================================================= –> <!– SYSTEM: Archiving and Interchange DTD Suite –> <!– –> <!– PURPOSE: Names all elements in the math classes –> <!– –> <!– CONTAINS: 1) Default definition of the math classes –> <!– 2) Inline formula <inline-formula> –> <!– 3) Display Formula <disp-formula> –> <!– 4) TeX Math Equation <tex-math> –> <!– –> <!– 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.” –> <!– –> <!– 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. –> <!– –> <!– Suggestions for refinements and enhancements to –> <!– the DTD suite should be sent in email to: –> <!– archive-dtd@ncbi.nlm.nih.gov –> <!– –> <!– ============================================================= –>

<!– ============================================================= –> <!– 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"              -->

<!– ============================================================= –> <!– PARAMETER ENTITIES FOR ATTRIBUTE LISTS –> <!– ============================================================= –>

<!– DISPLAY FORMULA ATTRIBUTES –> <!– Attributes for the <disp-formula> element –> <!ENTITY % disp-formula-atts

"id         ID                                 #IMPLIED 
 content-type
            CDATA                              #IMPLIED
 specific-use
            CDATA                              #IMPLIED" >

<!– DISPLAY FORMULA GROUP ATTRIBUTES –> <!– Attributes for the <disp-formula-group>

element                                    -->

<!ENTITY % disp-formula-group-atts

"id        ID                                #IMPLIED
 content-type
           CDATA                             #IMPLIED 
 specific-use
           CDATA                             #IMPLIED"  >

<!– INLINE FORMULA ATTRIBUTES –> <!– Attribute list for the <inline-formula>

element                                    -->

<!ENTITY % inline-formula-atts

"id         ID                                 #IMPLIED  
 content-type
            CDATA                              #IMPLIED
 xml:lang   NMTOKEN                            #IMPLIED" >

<!– TEX MATH ATTRIBUTES –> <!– Attributes for the <disp-formula> element –> <!ENTITY % tex-math-atts

"id         ID                                 #IMPLIED
 content-type
            CDATA                              #IMPLIED
 notation   NOTATION (LaTeX | tex | TEX | TeX)
                                               #IMPLIED
 version    CDATA                              #IMPLIED" >

<!– ============================================================= –> <!– MATH ELEMENTS (INLINE LEVEL) –> <!– ============================================================= –>

<!– FORMULA, INLINE ELEMENTS –> <!– Elements for use in the <inline-formula>

element                                    -->

<!ENTITY % inline-formula-elements

"| %emphasis.class; | %inline-display.class; |
 %inline-math.class; |
 %math.class; | 
 %phrase-content.class; | %subsup.class;"    >

<!– FORMULA, INLINE MODEL –> <!– Content model for an <inline-formula> –> <!ENTITY % inline-formula-model

"(#PCDATA %inline-formula-elements;)*"       >

<!– FORMULA, INLINE –> <!– Inline element for a mathematical

equation, expression, or formula 
Details at: 
http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=inline-formula
http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=inline-formula
http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=inline-formula
http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=inline-formula
                                           -->

<!ELEMENT inline-formula

%inline-formula-model;                       >

<!ATTLIST inline-formula

%inline-formula-atts;                                   >

<!– ============================================================= –> <!– MATH ELEMENTS (INLINE LEVEL) –> <!– ============================================================= –>

<!– DISPLAY FORMULA ELEMENTS –> <!– Elements for use in the <disp-formula>

element                                    -->

<!ENTITY % disp-formula-elements

"| %access.class; | %address-link.class; |
 %break.class; | %emphasis.class; | 
 %inline-display-noalt.class; |
 %inline-math.class; | %label.class; |
 %phrase-content.class; | 
 %math.class; |  %simple-display.class; | 
 %subsup.class;"                             >

<!– FORMULA, DISPLAY MODEL –> <!– Content model for an <disp-formula> –> <!ENTITY % disp-formula-model

"(#PCDATA %disp-formula-elements;)*"         >

<!– FORMULA, DISPLAY –> <!– Block-level (callout) element for a

mathematical equation, expression, or 
formula. 
Details at: 
http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=disp-formula
http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=disp-formula
http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=disp-formula
http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=disp-formula
                                           -->

<!ELEMENT disp-formula %disp-formula-model; > <!ATTLIST disp-formula

%disp-formula-atts;                                     >

<!– FORMULA, DISPLAY GROUP MODEL –> <!– Content model for an <disp-formula-group> –> <!ENTITY % disp-formula-group-model

"(label?, (%caption.class;)?,
  (%access.class; | %address-link.class;)*,  
  (%block-math.class;)* )"                   >

<!– FORMULA, DISPLAY GROUP –> <!– Used for a group of equations or other

mathematical expressions that are displayed
together. 
Details at: 
http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=disp-formula-group
http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=disp-formula-group
http://dtd.nlm.nih.gov/articleauthoring/tag-library/3.0/index.html?elem=disp-formula-group
http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=disp-formula-group
                                           -->

<!ELEMENT disp-formula-group

%disp-formula-group-model;                   >

<!ATTLIST disp-formula-group

%disp-formula-group-atts;                               >

<!– TEX MATH EQUATION –> <!– Used to hold encoded math, expressed in TeX

Details at: 
http://dtd.nlm.nih.gov/archiving/tag-library/3.0/index.html?elem=tex-math
http://dtd.nlm.nih.gov/publishing/tag-library/3.0/index.html?elem=tex-math
http://dtd.nlm.nih.gov/book/tag-library/3.0/index.html?elem=tex-math
                                           -->

<!ELEMENT tex-math (#PCDATA) > <!ATTLIST tex-math

%tex-math-atts;                                         >

<!– ================== End Math Class Elements Module =========== –>