<!--
  * dtd/rt-version.dtd
  *
  * Copyright (c) 2014-2021 Simon Fraser University
  * Copyright (c) 2000-2021 John Willinsky
  * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
  *
  * DTD for Reading Tools version files.
  *
  -->

<!--
  * version - RT version container
  * locale: locale key code, e.g. "en_US"
  -->
<!ELEMENT version (version_title,version_description,context*)>
	<!ATTLIST version
		id CDATA #REQUIRED
		locale CDATA #REQUIRED>

<!-- Version information -->
<!ELEMENT version_title (#PCDATA)>
<!ELEMENT version_description (#PCDATA)>


<!--
  * context - Grouping of related searches
  -->
<!ELEMENT context (context_title,context_abbrev,context_description,(cites_context|author_terms|define_terms|geo_terms)?,search*)>

<!-- Context information -->
<!ELEMENT context_title (#PCDATA)>
<!ELEMENT context_abbrev (#PCDATA)>
<!ELEMENT context_description (#PCDATA)>
<!ELEMENT author_terms EMPTY> <!-- If present use authors as default search terms -->
<!ELEMENT define_terms EMPTY> <!-- If present use as the "Define Terms" context -->
<!ELEMENT cites_context EMPTY> <!-- If present use as the "Cited By X" context -->
<!ELEMENT geo_terms EMPTY> <!-- If present use geo context as default search terms -->


<!--
  * search - Search engine descriptor
  -->
<!ELEMENT search (search_title,search_description,url,search_url,search_post?)>

<!-- Search information -->
<!ELEMENT search_title (#PCDATA)>
<!ELEMENT search_description (#PCDATA)>
<!ELEMENT url (#PCDATA)> <!-- The URL of the site -->
<!ELEMENT search_url (#PCDATA)> <!-- The URL to feed search terms into. Appending a search term must make this a valid URL -->
<!ELEMENT search_post (#PCDATA)> <!-- Post parameters in query string format, if applicable -->