<!-- This is the ISO12083:1994 document type definition for Mathematics -->
<!-- Copyright: (C) International Organization for Standardization 1994.
Permission to copy in any form is granted for use with conforming SGML
systems and applications as defined in ISO 8879:1986, provided this notice
is included in all copies. -->
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<!-- PUBLIC DOCUMENT TYPE DEFINITION SUBSET -->
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<!--
This DTD is included by the Book and Article DTDs of ISO12083:1994.
As it is a separate entity it may also be included by other DTDs.
Since there is no consensus on how to describe the semantics of formulas,
it only describes their presentational or visual structure. Since, however,
there is a strong need for such description (especially within the
print-disabled community), it is recommended that the following
declaration be added where there is a requirement for a consistent,
standardized mechanism to carry semantic meanings for the SGML
elements declared throughout this part of this International Standard:
<!ENTITY % SDAMAP "SDAMAP NAME #IMPLIED" >
and that the attribute represented by %SDAMAP; be made available for
all elements which may require a semantic association, or, in the simpler
case, be added to all elements in this DTD. -->
<!--
DTD Change History (U.S. date notation)
05/29/02 Commented out definitions and uses of SDAFORM, SDARULE, SDAPREF, SDASUFF, SDASUSP as they are not used for
NPG
-->
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<!-- Parameter entities describing the possible contents of formulas. -->
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<!-- character transformations -->
<!ENTITY % p.trans "bold|italic|sansser|typewrit|smallcap|roman">
<!-- mathematical formula elements -->
<!ENTITY % m.math "fraction|subform|sup|inf|top|bottom|middle|fence|mark|
post|box|overline|undrline|radical|array|hspace|vspace|break|markref" >
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<!-- Accessible Document and other Parameter Entities
If this DTD is not imbedded by a ISO12083:1994 Book or Article,
the comment delimiters should be removed. -->
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<!-- ENTITY % SDAFORM "sdaform CDATA #FIXED" -->
<!-- ENTITY % SDARULE "sdarule CDATA #FIXED" -->
<!-- ENTITY % SDAPREF "sdapref CDATA #FIXED" -->
<!-- ENTITY % SDASUFF "sdasuff CDATA #FIXED" -->
<!-- ENTITY % SDASUSP "sdasusp CDATA #FIXED" -->
<!-- ===================================================================== -->
<!-- This entity is for an attribute to indicate which alphabet is
used in the element (f, fd). You may change this to
a notation attribute, where the notation could describe a
keyboard mapping. Please modify the set as necessary.
If this DTD is not imbedded by a ISO12083:1994 Book or Article,
the comment delimiters should be removed. -->
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<!ENTITY % a.types "(latin|greek|cyrillic|hebrew|kanji) 'latin'" >
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<!-- character transformations -->
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<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT bold (#PCDATA | %p.trans;)*><!-- bold -->
<!ELEMENT italic (#PCDATA | %p.trans;)*><!-- italic -->
<!ELEMENT sansser (#PCDATA | %p.trans;)*><!-- sans serif -->
<!ELEMENT typewrit (#PCDATA | %p.trans;)*><!-- typewriter -->
<!ELEMENT smallcap (#PCDATA | %p.trans;)*><!-- small caps -->
<!ELEMENT roman (#PCDATA | %p.trans;)*><!-- roman -->
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<!-- Fractions -->
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<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT fraction (num, den)><!-- fraction -->
<!ELEMENT num (#PCDATA | %p.trans;|%m.math;)*><!-- numerator -->
<!ELEMENT den (#PCDATA | %p.trans;|%m.math;)*><!-- denominator -->
<!-- ELEMENT NAME VALUE DEFAULT -->
<!ATTLIST fraction shape (built|case) #IMPLIED
align (left|center|right)
"center"
style (single|double|triple|dash|dot|bold|blank|none)
"single" >
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<!-- Superiors, inferiors, accents, over and under -->
<!-- ===================================================================== -->
<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT sup (#PCDATA | %p.trans;|%m.math;)*><!-- superior -->
<!ELEMENT inf (#PCDATA | %p.trans;|%m.math;)*><!-- inferior -->
<!-- ELEMENT NAME VALUE DEFAULT -->
<!ATTLIST sup location (pre|post) "post"
arrange (compact|stagger)
"compact" >
<!ATTLIST inf location (pre|post) "post"
arrange (compact|stagger) "compact" >
<!-- ===================================================================== -->
<!-- Embellishments -->
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<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT top (#PCDATA | %p.trans;|%m.math;)*><!-- top embellishment -->
<!ELEMENT middle (#PCDATA | %p.trans;|%m.math;)*><!-- middle, or "through" -->
<!ELEMENT bottom (#PCDATA | %p.trans;|%m.math;)*><!-- bottom embellishment -->
<!-- ELEMENT NAME VALUE DEFAULT -->
<!ATTLIST top align (left|center|right)
"center"
sizeid ID #IMPLIED><!-- to pass on the height -->
<!ATTLIST middle align (left|center|right)
"center"
sizeid ID #IMPLIED><!-- to pass on the height -->
<!ATTLIST bottom align (left|center|right)
"center"
sizeid ID #IMPLIED><!-- to pass on the height -->
<!-- The subform element is defined later -->
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<!-- Fences, boxes, overlines and underlines -->
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<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT mark EMPTY >
<!ELEMENT fence (#PCDATA | %p.trans;|%m.math;)*><!-- fence -->
<!ELEMENT post EMPTY ><!--post -->
<!ELEMENT box (#PCDATA | %p.trans;|%m.math;)*><!-- box -->
<!ELEMENT overline (#PCDATA | %p.trans;|%m.math;)*><!-- overline -->
<!ELEMENT undrline (#PCDATA | %p.trans;|%m.math;)*><!-- underline -->
<!-- ELEMENT NAME VALUE DEFAULT -->
<!ATTLIST mark id ID #REQUIRED >
<!-- lpost - left post -->
<!-- rpost - right post -->
<!-- sixeid - to pass on the height -->
<!-- sizeref - to pick up a height -->
<!ATTLIST fence lpost CDATA "|"
rpost CDATA "|"
style (single|double|triple|dash|dot|bold|blank|none)
"single"
sizeid ID #IMPLIED
sizeref IDREF #IMPLIED
>
<!-- sixeid - to pass on the height -->
<!-- sizeref - to pick up a height -->
<!ATTLIST post post CDATA "|"
style (single|double|triple|dash|dot|bold|blank|none)
"single"
sizeid ID #IMPLIED
sizeref IDREF #IMPLIED
>
<!ATTLIST box style (single|double|triple|dash|dot|bold|blank|none)
"single" >
<!-- type - embellishment type -->
<!ATTLIST overline type CDATA "-"
style (single|double|triple|dash|dot|bold|blank|none)
"single"
start IDREF #IMPLIED
end IDREF #IMPLIED >
<!-- type - embellishment type -->
<!ATTLIST undrline type CDATA "_"
style (single|double|triple|dash|dot|bold|blank|none)
"single"
start IDREF #IMPLIED
end IDREF #IMPLIED >
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<!-- Labelled arrows -->
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<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT subform (#PCDATA | %p.trans;|%m.math;)*><!-- base element -->
<!-- ELEMENT NAME VALUE DEFAULT -->
<!-- sizeid - to pass on a width, or a height -->
<!-- sizeref - to pick up a width -->
<!ATTLIST subform sizeid ID #IMPLIED
sizeref IDREF #IMPLIED
>
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<!-- Roots -->
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<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT radical (radix?, radicand)><!-- root or radical -->
<!ELEMENT radix (#PCDATA | %p.trans;|%m.math;)*><!-- radix -->
<!ELEMENT radicand (#PCDATA | %p.trans;|%m.math;)*><!-- radicand -->
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<!-- Arrays -->
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<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT array (arrayrow+|arraycol+)><!-- array -->
<!ELEMENT arrayrow (arraycel+)><!-- array row -->
<!ELEMENT arraycol (arraycel+)><!-- array column -->
<!ELEMENT arraycel (#PCDATA | %p.trans;|%m.math;)*><!-- array cell -->
<!-- ELEMENT NAME VALUE DEFAULT -->
<!-- rowalign - row alignment -->
<!-- colalign - column alignment -->
<!-- rowsep - row separators -->
<!-- colsep - column separators -->
<!ATTLIST array rowalign NMTOKENS #IMPLIED
colalign NMTOKENS #IMPLIED
rowsep NMTOKENS #IMPLIED
colsep NMTOKENS #IMPLIED >
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<!-- Spacing -->
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<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT hspace EMPTY><!-- horizontal spacing -->
<!ELEMENT vspace EMPTY><!-- vertical spacing -->
<!ELEMENT break EMPTY><!-- turn line, break -->
<!ELEMENT markref EMPTY><!-- hmark reference -->
<!-- ELEMENT NAME VALUE DEFAULT -->
<!ATTLIST hspace space CDATA "1 mm"><!-- units as required -->
<!ATTLIST vspace space CDATA "1 mm"><!-- units as required -->
<!ATTLIST markref refid IDREF #REQUIRED
direct (hor|ver) "hor"><!-- horizontal or vertical -->
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<!-- the formula elements -->
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<!-- ELEMENT MIN CONTENT EXPLANATIONS -->
<!ELEMENT f (#PCDATA | %p.trans;|%m.math;|mathimg)*><!-- in-line formula -->
<!ELEMENT fd (#PCDATA | %p.trans;|%m.math;|mathimg)*><!-- display formula -->
<!ELEMENT dformgrp (f|fd)+><!-- display-formula group -->
<!-- MATHIMG added to parallel TBLIMG in CALSTBL.DTD -->
<!-- PD 2009/07/27 Modified mathimg to deprecate <!ENTITY to <entity>: changed entname ENTITY #REQUIRED to entname CDATA #IMPLIED and added entref IDREF #IMPLIED -->
<!ELEMENT mathimg EMPTY>
<!ATTLIST mathimg entname CDATA #IMPLIED
entref IDREF #IMPLIED
show (yes | no) "yes"
file CDATA #IMPLIED>
<!-- ELEMENT NAME VALUE DEFAULT -->
<!ATTLIST f id ID #IMPLIED
alphabet %a.types;>
<!-- %SDAPREF; "Inlineformula"
%SDASUSP; "suspend" -->
<!ATTLIST fd id ID #IMPLIED
num CDATA #IMPLIED
align (left|center|right)
"center"
alphabet %a.types;>
<!--
%SDAPREF; "Displayformula"
%SDASUSP; "suspend" -->
<!ATTLIST dformgrp id ID #IMPLIED
num CDATA #IMPLIED
align (left|center|right)
"center">
<!--
%SDAPREF; "Displayformulagroup" -->
