<!-- ** declarations ** -->
<!-- Root element -->
<!ELEMENT declarations (elements, attributes?, parameterEntities?, generalEntities?)>

<!-- ** elements ** -->
<!-- Wraps all element information -->
<!ELEMENT elements (element+)>

<!-- ** attributes ** -->
<!-- Wraps all attribute information information -->
<!ELEMENT attributes (attribute+)>

<!-- ** parameterEntities ** -->
<!-- Wraps all parameter entity information -->
<!ELEMENT parameterEntities (entity+)>

<!-- ** generalEntities ** -->
<!-- Wraps all general entity (those entities that are not parameter entity) information -->
<!ELEMENT generalEntities (entity+)>

<!-- ** element ** -->
<!-- Information about a single element declaration. This does not contain any attribute
information as attributes are declared separately. An element may not have a context if, 
for example, it is a root element or its declaration is never used inside another element in a DTD -->
<!ELEMENT element (declaredIn, context?)>
<!ATTLIST element 
   name CDATA #REQUIRED
   model CDATA #REQUIRED     
   dtdOrder CDATA #REQUIRED>

<!-- ** attribute ** -->
<!-- Wrapper for all attributes of a given name; content of this element
indicates where attributes are declared. -->
<!ELEMENT attribute (attributeDeclaration+)>
<!ATTLIST attribute name CDATA #REQUIRED>

<!-- ** attributeDeclaration ** -->
<!-- Information about a specific attribute declaration in an element -->
<!ELEMENT attributeDeclaration (declaredIn)>
<!ATTLIST attributeDeclaration
   element CDATA #REQUIRED
   mode CDATA #IMPLIED
   type CDATA #REQUIRED
   defaultValue CDATA #IMPLIED>

<!-- ** entity ** -->
<!-- Information about an entity declaration. Parameter Entities will be children of the
parameterEntities element, while general entities will be children of generalEntities.
@systemId and @publicId will only be set for external entities. -->
<!ELEMENT entity (declaredIn, value?)>
<!ATTLIST entity
   name CDATA #REQUIRED
   systemId CDATA #IMPLIED
   publicId CDATA #IMPLIED>

<!-- ** value ** -->
<!-- Holds value of an entity -->
<!ELEMENT value (#PCDATA)>

<!-- ** declaredIn ** -->
<!-- Location information indicates where a declaration occured inside a DTD. The @systemId is the 
filename of the DTD, while the @publicId is an optional "logical" name for the file. @lineNumber
is the line number where the the declaration was completed. -->
<!ELEMENT declaredIn EMPTY>
<!ATTLIST declaredIn
   systemId CDATA #REQUIRED
   publicId CDATA #IMPLIED
   lineNumber CDATA #REQUIRED>
   
<!-- ** context ** -->
<!-- Wraps the list of parent element names -->
<!ELEMENT context (parent+)>

<!-- ** parent ** -->
<!-- Name of a parent element -->
<!ELEMENT parent EMPTY>
<!ATTLIST parent name CDATA #REQUIRED>