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<!-- MODULE: Math Element Classes -->
<!-- VERSION: 1.1 -->
<!-- DATE: November 1, 2003 -->
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<!-- PUBLIC DOCUMENT TYPE DEFINITION -->
<!-- TYPICAL INVOCATION -->
<!--
"-//NLM//DTD Archiving and Interchange DTD Suite Math Class Elements v1.1 20031101//EN"
Delivered as file "math.ent" -->
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<!-- SYSTEM: Archiving and Interchange DTD Suite -->
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<!-- PURPOSE: Names all elements in the math classes -->
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<!-- CONTAINS: 1) Default definition of the math classes -->
<!-- 2) Inline formula <inline-formula> -->
<!-- 3) Display Formula <disp-formula> -->
<!-- 4) TeX Math Equation <tex-math> -->
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<!-- 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. -->
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<!-- DTD VERSION\CHANGE HISTORY -->
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<!--
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Version Reason/Occasion (who) vx.x (yyyy-mm-dd)
=============================================================
Version 1.1 (TRG) v1.1 (2003-11-01)
2. Added attribute "alternate-form-of" to:
- <disp-formula> (by modifying parameter entity
%disp-formula-atts;)
- <inline-formula>
- <tex-math> (by modifying parameter entity
%tex-math-atts;)
Rationale: Where multiple formats of an item (e.g., graphic
file, media object, chemical structure) are available, this
attribute indicates that a format is a secondary one and
provides a link to the primary format, so that only one
format of an item is displayed.
1. Added attribute "id" to element <inline-formula>
Rationale: To allow an <inline-formula> to be linked to,
especially by alternate forms of the same formula (which will
use the "alternate-form-of" attribute to link to the primary)
-->
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<!-- PARAMETER ENTITY DEPENDENCIES
Requires the following parameter entities
be defined before calling this module,
usually accomplished in the Customization
Module for the specific DTD:
%access.class;
%break.class;
%emphasis.class;
%inline-display.class;
%inline-formula-elements;
%label.class;
%math.class;
%simple-display.class;
%subsup.class;
-->
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<!-- DEFAULT MATH CLASS DEFINITIONS -->
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<!-- MATHEMATICAL EXPRESSIONS -->
<!ENTITY % math.class "tex-math | mml:math" >
<!-- INLINE MATHEMATICAL EXPRESSIONS MIX -->
<!ENTITY % inline-math "inline-formula" >
<!-- MATHEMATICAL EXPRESSIONS AND FORMULAE MIX -->
<!ENTITY % block-math "disp-formula" >
<!-- id Unique identifier so the element may be
referenced -->
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<!-- PARAMETER ENTITIES FOR ATTRIBUTE LISTS -->
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<!-- DISPLAY FORMULA ATTRIBUTES -->
<!-- Attributes for the <disp-formula> element -->
<!-- alternate-form-of
Where multiple formats of an item (e.g.,
graphic file, media object, chemical
structure) are available, this attribute
indicates that a format is a secondary
one and provides a link to the primary
format, so that only one format of an
item is displayed.
id Unique identifier so the element may be
referenced -->
<!ENTITY % disp-formula-atts
"alternate-form-of
IDREF #IMPLIED
id ID #IMPLIED" >
<!-- TEX MATH ATTRIBUTES -->
<!-- Attributes for the <disp-formula> element -->
<!-- alternate-form-of
Where multiple formats of an item (e.g.,
graphic file, media object, chemical
structure) are available, this attribute
indicates that a format is a secondary
one and provides a link to the primary
format, so that only one format of an
item is displayed.
id Unique identifier so the element may be
referenced
version Which version of TeX used
notation Says that the content of this element will
be in TeX and needs to be surrounded by
a CDATA section. -->
<!ENTITY % tex-math-atts
"alternate-form-of
IDREF #IMPLIED
id CDATA #IMPLIED
notation NOTATION (tex | TEX | TeX) #IMPLIED
version CDATA #IMPLIED" >
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<!-- MATH ELEMENTS (PARAGRAPH LEVEL) -->
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<!-- FORMULA, INLINE ELEMENTS -->
<!-- Elements for use in the <inline-formula>
element -->
<!ENTITY % inline-formula-elements
"%emphasis.class; | %inline-display.class; |
%math.class; | %subsup.class;" >
<!-- FORMULA, INLINE -->
<!-- Inline element for a mathematical
equation, expression, or formula -->
<!ELEMENT inline-formula
(#PCDATA | %inline-formula-elements;)* >
<!-- alternate-form-of
Where multiple formats of an item (e.g.,
graphic file, media object, chemical
structure) are available, this attribute
indicates that a format is a secondary
one and provides a link to the primary
format, so that only one format of an
item is displayed.
id Unique identifier so an inline-formula
can be referenced -->
<!ATTLIST inline-formula
alternate-form-of
IDREF #IMPLIED
id ID #IMPLIED >
<!-- FORMULA, DISPLAY ELEMENTS -->
<!-- Elements for use in the <disp-formula>
element -->
<!ENTITY % disp-formula-elements
"%access.class; | %break.class; |
%emphasis.class; | %inline-display.class; |
%label.class; | %math.class; |
%simple-display.class; | %subsup.class;" >
<!-- FORMULA, DISPLAY -->
<!-- Block-level (callout) element for a
mathematical equation, expression, or
formula. The characters representing the
equation may be present, or the equation
could be a graphic. -->
<!ELEMENT disp-formula (#PCDATA | %disp-formula-elements; )* >
<!-- alternate-form-of
Where multiple formats of an item (e.g.,
graphic file, media object, chemical
structure) are available, this attribute
indicates that a format is a secondary
one and provides a link to the primary
format, so that only one format of an
item is displayed.
id Unique identifier so the element may be
referenced -->
<!ATTLIST disp-formula
%disp-formula-atts; >
<!-- TEX MATH EQUATION -->
<!-- Used to hold encoded math, expressed in TeX-->
<!ELEMENT tex-math (#PCDATA) >
<!-- alternate-form-of
Where multiple formats of an item (e.g.,
graphic file, media object, chemical
structure) are available, this attribute
indicates that a format is a secondary
one and provides a link to the primary
format, so that only one format of an
item is displayed.
id Unique identifier so the element may be
referenced
version Which version of TeX used
notation Says that the content of this element will
be in TeX and needs to be surrounded by
a CDATA section. -->
<!ATTLIST tex-math
%tex-math-atts; >
<!-- ================== End List Class Module ==================== -->