<!--
FILE : cellml_1_0.dtd

CREATED : 22 January 2001

LAST MODIFIED : 25 February 2002

AUTHOR : Warren Hedley (w.hedley@auckland.ac.nz)
         The Bioengineering Research Group
         The University of Auckland

DESCRIPTION : This document contains a DTD corresponding to the syntax rules
  defined in the 10 August 2001 Specification for CellML 1.0. This
  specification is available at
    http://www.cellml.org/public/specification/20010810/index.html

SYSTEM IDENTIFIER : http://www.cellml.org/cellml/cellml_1_0.dtd

COPYRIGHT : (2001) Bioengineering Research Group, University of Auckland.
-->

<!ENTITY % use_mathml_dtd "IGNORE">
<![%use_mathml_dtd;[
  <!ENTITY % mathml-charent.module "IGNORE">
  <!ENTITY % mathml_dtd_path
    "'http://www.w3.org/TR/MathML2/dtd/mathml2.dtd'">
  <!ENTITY % mathml_dtd PUBLIC "-//W3C//DTD MathML 2.0//EN"
    %mathml_dtd_path;>

  %mathml_dtd;

  <!ATTLIST %cn.qname;    
    %MATHML.Common.attrib;
    %att-type;
    %att-base;
    %att-definition;
    %att-encoding;
    cellml:units      CDATA           #REQUIRED
  >
]]>

<!ENTITY % cellml_common_attributes "
  xmlns               CDATA           #IMPLIED
  xmlns:cellml        CDATA           #IMPLIED
  xmlns:cmeta         CDATA           #IMPLIED
  cmeta:id            ID              #IMPLIED
">

<!ELEMENT model (units | component | group | connection)*>
<!ATTLIST model
  %cellml_common_attributes;
  name                CDATA           #REQUIRED
>

<!ELEMENT component (units | variable | reaction | math)*>
<!ATTLIST component
  %cellml_common_attributes;
  name                CDATA           #REQUIRED
>

<!ELEMENT variable EMPTY>
<!ATTLIST variable
  %cellml_common_attributes;
  name                CDATA           #REQUIRED
  public_interface    (in|out|none)   #IMPLIED
  private_interface   (in|out|none)   #IMPLIED
  units               CDATA           #REQUIRED
  initial_value       CDATA           #IMPLIED
>

<!ELEMENT connection (map_components | map_variables+)>
<!ATTLIST connection
  %cellml_common_attributes;
>

<!ELEMENT map_components EMPTY>
<!ATTLIST map_components
  %cellml_common_attributes;
  component_1         CDATA           #REQUIRED
  component_2         CDATA           #REQUIRED
>

<!ELEMENT map_variables EMPTY>
<!ATTLIST map_variables
  %cellml_common_attributes;
  variable_1          CDATA           #REQUIRED
  variable_2          CDATA           #REQUIRED
>

<!ELEMENT units (unit*)>
<!ATTLIST units
  %cellml_common_attributes;
  name                CDATA           #REQUIRED
  base_units          (yes|no)        #IMPLIED
>

<!ELEMENT unit EMPTY>
<!ATTLIST unit
  %cellml_common_attributes;
  multiplier          CDATA           #IMPLIED
  prefix              CDATA           #IMPLIED
  units               CDATA           #REQUIRED
  exponent            CDATA           #IMPLIED
  offset              CDATA           #IMPLIED
>

<!ELEMENT group (relationship_ref | component_ref)+>
<!ATTLIST group
  %cellml_common_attributes;
>

<!ELEMENT relationship_ref EMPTY>
<!ATTLIST relationship_ref
  %cellml_common_attributes;
  relationship        CDATA           #REQUIRED
>

<!ELEMENT component_ref (component_ref*)>
<!ATTLIST component_ref
  %cellml_common_attributes;
  component           CDATA           #REQUIRED
>

<!ELEMENT reaction (variable_ref+)>
<!ATTLIST reaction
  %cellml_common_attributes;
  reversible          (yes|no)        #IMPLIED
>   

<!ELEMENT variable_ref (role+)>
<!ATTLIST variable_ref
  %cellml_common_attributes;
  variable            CDATA           #REQUIRED
>

<!ELEMENT role (math?)>
<!ATTLIST role
  %cellml_common_attributes;
  role (reactant|product|activator|catalyst|inhibitor|modifier|rate) #REQUIRED
  direction (forward|backward|both)   #IMPLIED
  delta_variable      CDATA           #IMPLIED
  stoichiometry       CDATA           #IMPLIED
>