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  1. <!-- This is the ISO12083:1993 document type definition for Mathematics    -->
  2. <!-- Copyright: (C) International Organization for Standardization 1993.
  3. Permission to copy in any form is granted for use with conforming SGML
  4. systems and applications as defined in ISO 8879:1986, provided this notice
  5. is included in all copies.                                                 -->
  6.  
  7. <!--
  8. This DTD is included by the Book and Article DTDs of ISO12083:1993.
  9. As it is a separate entity it may also be included by other DTDs.
  10. Since there is no consensus on how to describe the semantics of formulas,
  11. it only describes their presentational or visual structure.                -->
  12.  
  13. <!--  Parameter entities describing the possible contents of formulas.     -->
  14. <!ENTITY % p.trans "bold|italic|sansser|typewrit|smallcap|roman"
  15.                    -- character transformations                            -->
  16. <!ENTITY % m.math "fraction|subform|sup|inf|top|bottom|middle|fence|mark|
  17.    post|box|overline|undrline|radical|array|hspace|vspace|break|markref|
  18.    #PCDATA" -- mathematical formula elements                               -->
  19.  
  20. <!-- Accessible Document and other Parameter Entities        
  21.      If this DTD is not imbedded by a ISO12083:1993 Book or Article,
  22.      the comments should be removed.                                       -->
  23. <!ENTITY % SDAFORM      "SDAFORM   NAME     #FIXED"                          >
  24. <!ENTITY % SDARULE      "SDARULE   CDATA    #FIXED"                          > 
  25. <!ENTITY % SDAPREF      "SDAPREF   CDATA    #FIXED"                          >
  26. <!ENTITY % SDASUFF      "SDASUFF   CDATA    #FIXED"                          >
  27. <!ENTITY % a.types "(latin|greek|cyrillic|hebrew|kanji) latin"               >
  28. <!--        This attribute indicates which alphabet is used in the
  29.            element (formula, dformula). You may change this to a notation 
  30.            attribute, where the notation could describe a keyboard mapping. 
  31.            Please modify the set as necessary.                             -->
  32.  
  33.  
  34. <!-- character transformations                                             --> 
  35. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  36. <!ELEMENT bold                 - -  (%p.trans;|#PCDATA)* -- bold           -->
  37. <!ELEMENT italic               - -  (%p.trans;|#PCDATA)* -- italic         -->
  38. <!ELEMENT sansser              - -  (%p.trans;|#PCDATA)* -- sans serif     -->
  39. <!ELEMENT typewrit             - -  (%p.trans;|#PCDATA)* -- typewriter     -->
  40. <!ELEMENT smallcap             - -  (%p.trans;|#PCDATA)* -- small caps     -->
  41. <!ELEMENT roman                - -  (%p.trans;|#PCDATA)* -- roman          -->
  42. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  43. <!ATTLIST italic    %SDAFORM;                   "it"                         >
  44. <!ATTLIST bold      %SDAFORM;                   "b"                          >
  45. <!ATTLIST (sansser|typewrit|smallcap|roman)   
  46.                     %SDAFORM;                   "other"                      >
  47.  
  48.  
  49.  
  50. <!-- Fractions                                                             -->
  51. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  52. <!ELEMENT fraction             - -  (num, den)      -- fraction            -->
  53. <!ELEMENT num                  - -  (%p.trans;|%m.math;)* -- numerator     -->
  54. <!ELEMENT den                  - -  (%p.trans;|%m.math;)* -- denominator   -->
  55. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  56. <!ATTLIST fraction  shape      (built|case) #IMPLIED
  57.                     align      (left|center|right)   
  58.                                                 center
  59.                     style      (single|double|triple|dash|dot|bold|blank|none)
  60.                                                 single
  61.                     %SDAFORM;                   "para"
  62.                     %SDAPREF;                   "fraction begin: "
  63.                     %SDASUFF;                   "fraction end: "             >
  64. <!ATTLIST num       %SDAFORM;                   "para"
  65.                     %SDAPREF;                   "numerator: "                >
  66. <!ATTLIST den       %SDAFORM;                   "para"
  67.                     %SDAPREF;                   "denominator: "              >
  68.  
  69. <!-- Superiors, inferiors, accents, over and under                         -->
  70. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  71. <!ELEMENT sup                  - -  (%p.trans;|%m.math;)* -- superior      -->
  72. <!ELEMENT inf                  - -  (%p.trans;|%m.math;)* -- inferior      -->
  73. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  74. <!ATTLIST sup       location   (pre|post)       post
  75.                     arrange    (compact|stagger)
  76.                                                 compact
  77.                     %SDAFORM;                   "para"
  78.                     %SDAPREF;                   "superior: "                 >
  79. <!ATTLIST inf       location   (pre|post) post
  80.                     arrange    (compact|stagger) compact
  81.                     %SDAFORM;                   "para"
  82.                     %SDAPREF;                   "inferior: "                 >
  83.  
  84. <!-- Embellishments                                                        -->
  85. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  86. <!ELEMENT top                  - -  (%p.trans;|%m.math;)* 
  87.                                                     -- top embellishment   -->
  88. <!ELEMENT middle               - -  (%p.trans;|%m.math;)* 
  89.                                                    -- middle, or "through" -->  
  90. <!ELEMENT bottom               - -  (%p.trans;|%m.math;)* 
  91.                                                    -- bottom embellishment -->                                                                                                      
  92. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  93. <!ATTLIST top       align      (left|center|right) 
  94.                                                 center
  95.                     sizeid     ID               #IMPLIED 
  96.                                                 -- to pass on the height   --
  97.                     %SDAFORM;                   "para"
  98.                     %SDAPREF;                   "top: "                      >
  99. <!ATTLIST middle    align      (left|center|right) 
  100.                                                 center
  101.                     sizeid     ID               #IMPLIED       
  102.                                                 -- to pass on the height   --
  103.                     %SDAFORM;                   "para"
  104.                     %SDAPREF;                   "middle: "                   >
  105. <!ATTLIST bottom    align      (left|center|right) 
  106.                                                 center
  107.                     sizeid    ID               #IMPLIED 
  108.                                                 -- to pass on the height   --
  109.                     %SDAFORM;                   "para"
  110.                     %SDAPREF;                   "bottom: "                   >
  111.  
  112.  
  113. <!-- The subform element is defined later                                  -->
  114.  
  115. <!-- Fences, boxes, overlines and underlines                               -->
  116. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  117. <!ELEMENT mark                 - O  EMPTY                                    >
  118. <!ELEMENT fence                - -  (%p.trans;|%m.math;)* -- fence         -->
  119. <!ELEMENT post                 - O  EMPTY            -- post               -->
  120. <!ELEMENT box                  - -  (%p.trans;|%m.math;)* -- box           -->
  121. <!ELEMENT overline             - -  (%p.trans;|%m.math;)* -- overline      -->
  122. <!ELEMENT undrline             - -  (%p.trans;|%m.math;)* -- underline     -->
  123. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  124. <!ATTLIST mark      id         ID               #REQUIRED
  125.                     %SDAPREF;                   "<?SDATRANS>Mark"            >
  126. <!ATTLIST fence     lpost      CDATA            "|" -- left post           --
  127.                     rpost      CDATA            "|" -- right post          --
  128.                     style      (single|double|triple|dash|dot|bold|blank|none) 
  129.                                                 single
  130.                     sizeid     ID               #IMPLIED 
  131.                                                 -- to pass on the height   --
  132.                     sizeref    IDREF            #IMPLIED 
  133.                                                 -- to pick up a height     --
  134.                     %SDAFORM;                   "para"
  135.                     %SDAPREF;                   "<?SDATRANS>Fence: "         >
  136. <!ATTLIST post      post       ENTITY           "verbar"
  137.                     style      (single|double|triple|dash|dot|bold|blank|none) 
  138.                                                 single
  139.                     sizeid     ID               #IMPLIED 
  140.                                                 -- to pass on the height   --
  141.                     sizeref    IDREF            #IMPLIED 
  142.                                                 -- to pick up a height     --
  143.                     %SDAFORM;  "para"
  144.                     %SDAPREF;  "post: "                                      >
  145. <!ATTLIST box       style      (single|double|triple|dash|dot|bold|blank|none) 
  146.                                                 single
  147.                     %SDAFORM;                   "para"
  148.                     %SDAPREF;                   "Box: "                      >
  149. <!ATTLIST overline  type       ENTITY           obar -- embellishment type --
  150.                     style      (single|double|triple|dash|dot|bold|blank|none) 
  151.                                                 single
  152.                     start      IDREF            #IMPLIED
  153.                     end        IDREF            #IMPLIED
  154.                     %SDAFORM;                   "para"
  155.                     %SDAPREF;                   "<?SDATRANS>Overline"        >
  156.  
  157. <!ATTLIST undrline  type       ENTITY           lowbar -- embellishment 
  158.                                                                        type --
  159.                     style      (single|double|triple|dash|dot|bold|blank|none) 
  160.                                                 single
  161.                     start      IDREF            #IMPLIED
  162.                     end        IDREF            #IMPLIED
  163.                     %SDAFORM;                   "para"
  164.                     %SDAPREF;                   "<?SDATRANS>Underline"       >
  165.  
  166. <!-- Labelled arrows                                                       -->
  167.  
  168. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  169. <!ELEMENT subform              - -  (%p.trans;|%m.math;)* -- base element  -->
  170. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  171. <!ATTLIST subform   sizeid     ID               #IMPLIED
  172.                                                 -- to pass on a width, or
  173.                                                 a height                   --
  174.                     sizeref    IDREF            #IMPLIED
  175.                                                 -- to pick up a width      --
  176.                     %SDAFORM;                   "para"
  177.                     %SDAPREF;                   "Base open"
  178.                     %SDASUFF;                   "Base close"                 >
  179.  
  180. <!-- Roots                                                                 -->
  181. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  182. <!ELEMENT radical              - -  (radix?, radicand) -- root or radical  -->
  183. <!ELEMENT radix                - -  (%p.trans;|%m.math;)* -- radix         -->
  184. <!ELEMENT radicand             O O  (%p.trans;|%m.math;)* -- radicand      -->
  185. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  186. <!ATTLIST radical   %SDAFORM;                   "para"
  187.                     %SDAPREF;                   "Radical open"
  188.                     %SDASUFF;                   "Radical close"              >
  189. <!ATTLIST radix     %SDAFORM;                   "para"
  190.                     %SDAPREF;                   "Radix open"
  191.                     %SDASUFF;                   "Radix close"                >
  192. <!ATTLIST radicand  %SDAFORM;                   "para"
  193.                     %SDAPREF;                   "Radicand"                   >
  194.  
  195. <!-- Arrays                                                                -->
  196. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  197. <!ELEMENT array                - -  (arrayrow+|arraycol+) -- array         -->
  198. <!ELEMENT arrayrow             - O  (arraycel+)      -- array row          -->
  199. <!ELEMENT arraycol             - O  (arraycel+)      -- array column       -->
  200. <!ELEMENT arraycel             - O  (%p.trans;|%m.math;)* -- array cell    -->
  201. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  202. <!ATTLIST array     rowalign   NMTOKENS         #IMPLIED -- row alignment  --
  203.                     colalign   NMTOKENS         #IMPLIED -- column 
  204.                                                                  alignment --
  205.                     rowsep     NMTOKENS         #IMPLIED -- row separators --
  206.                     colsep     NMTOKENS         #IMPLIED -- column 
  207.                                                                 separators --
  208.                     %SDAFORM;                   "para"
  209.                     %SDAPREF;                   "<?SDATRANS>Array open"
  210.                     %SDASUFF;                   "<?SDATRANS>Array close"     >
  211. <!ATTLIST arrayrow  %SDAFORM;                   "para"
  212.                     %SDAPREF;                   "Row"                        >
  213. <!ATTLIST arraycol  %SDAFORM;                   "para"
  214.                     %SDAPREF;                   "Column"                     >
  215. <!ATTLIST arraycel  %SDAFORM;                   "para"
  216.                     %SDAPREF;                   "Cell"                       >
  217.  
  218. <!-- Spacing                                                               -->
  219. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  220. <!ELEMENT hspace               - O EMPTY            -- horizontal spacing  -->
  221. <!ELEMENT vspace               - O EMPTY            -- vertical   spacing  -->
  222. <!ELEMENT break                - O EMPTY            -- turn line, break    -->
  223. <!ELEMENT markref              - O EMPTY            -- hmark reference     -->
  224. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  225. <!ATTLIST hspace    space      CDATA            "1 mm" 
  226.                                                     -- units as required   --
  227.                     %SDAPREF;                   "<!SDATRANS>Horizontal 
  228.                                                                       space" >
  229. <!ATTLIST vspace    space      CDATA            "1 mm" 
  230.                                                     -- units as required   --
  231.                     %SDAPREF;                   "<!SDATRANS>Vertical space"  >
  232. <!ATTLIST break     %SDAPREF;                   "<!SDATRANS>Break"           >
  233. <!ATTLIST markref   refid      IDREF            #REQUIRED
  234.                     direct     (hor|ver)        hor 
  235.                                                  -- horizontal or vertical --
  236.                     %SDAPREF;                   "<!SDATRANS>Reference 
  237.                                                                   to a mark" >
  238.  
  239. <!-- the formula elements                                                  -->
  240. <!--      ELEMENT              MIN  CONTENT               (EXCEPTIONS)     -->
  241. <!ELEMENT formula              - -  (%p.trans;|%m.math;)* 
  242.                                                         -- in-line formula -->
  243. <!ELEMENT dformula             - -  (%p.trans;|%m.math;)* 
  244.                                                         -- display formula -->
  245. <!ELEMENT dformgrp             - -  (formula|dformula)+ 
  246.                                                   -- display-formula group -->
  247. <!--      ELEMENT   NAME       VALUE            DEFAULT                    -->
  248. <!ATTLIST formula   id         ID               #IMPLIED
  249.                     alphabet   %a.types;
  250.                     %SDAPREF;                   "<!SDATRANS>Inline formula"  > 
  251. <!ATTLIST dformula  id         ID               #IMPLIED
  252.                     num        CDATA            #IMPLIED
  253.                     align      (left|center|right) 
  254.                                                 center
  255.                     alphabet   %a.types;
  256.                     %SDAPREF;                   "<?SDATRANS>Display formula" >
  257. <!ATTLIST dformgrp  id         ID               #IMPLIED
  258.                     num        CDATA            #IMPLIED
  259.                     align      (left|center|right) 
  260.                                                 center
  261.                     %SDAPREF                    "<?SDATRANS>Display formula 
  262.                                                                        group">
  263.