markdown.dtd

<!-- DTD for Markdown AST xml files -->

<!-- Shorthand expansions for child elements -->
<!ENTITY % leafblocktypes 'hr | atx | setext | indentedblock | fencedblock | htmlblock | linkrefsection | paragraph | blankline'>
<!ENTITY % containerblocktypes 'blockquote | list'>

<!ENTITY % inlinetypes '#PCDATA | codespan | em | strong | link | image | autolink | autolinkemail | inlinehtml | hardbreak | softbreak'>
<!ENTITY % blocktypes '%leafblocktypes; | %containerblocktypes;'>

<!ENTITY % inlinecontent '((%inlinetypes;)*)'>
<!ENTITY % blockcontent '((%blocktypes;)*)'>

<!ENTITY % linklabelcontent '((#PCDATA | codespan | autolink | inlinehtml | linklabel)*)'>

<!-- Document -->

<!ELEMENT document (%blockcontent;)>

<!-- Block Elements -->

<!ELEMENT hr EMPTY>

<!ELEMENT atx (%inlinecontent;)>
<!ATTLIST atx
        level       (1|2|3|4|5|6)   #REQUIRED>

<!ELEMENT setext (%inlinecontent;)>
<!ATTLIST setext
        level       (1|2)           #REQUIRED>

<!ELEMENT indentedblock (#PCDATA)>

<!ELEMENT fencedblock (#PCDATA)>
<!ATTLIST fencedblock
        infostring  CDATA           #IMPLIED>

<!ELEMENT htmlblock (#PCDATA)>

<!ELEMENT linkrefsection (linkref+)>

<!ELEMENT paragraph (%inlinecontent;)>

<!ELEMENT blockquote (%blockcontent;)>

<!ELEMENT list (listitem+)>
<!ATTLIST list
        type        (bullet|ordered) #REQUIRED
        start       CDATA           #IMPLIED>

<!-- Inline Elements -->

<!ELEMENT codespan (#PCDATA)>

<!ELEMENT em (%inlinecontent;)>
<!ELEMENT strong (%inlinecontent;)>

<!ELEMENT link (linklabel, (linkdata | linklabel | collapsedref | shortcutref))>

<!ELEMENT image (linklabel, (linkdata | linklabel | collapsedref | shortcutref))>

<!ELEMENT autolink (#PCDATA)>
<!ELEMENT autolinkemail (#PCDATA)>

<!ELEMENT inlinehtml (#PCDATA)>

<!ELEMENT hardbreak EMPTY>
<!ELEMENT softbreak EMPTY>

<!-- Supporting Data Elements -->

<!--   Lists -->
<!ELEMENT listitem (%blockcontent;)>

<!--   Links -->
<!ELEMENT linkref (linklabel, linkdata)>

<!ELEMENT linklabel (%linklabelcontent;)>

<!ELEMENT linkdata EMPTY>
<!ATTLIST linkdata
        href        CDATA           #REQUIRED
        title       CDATA           #IMPLIED>

<!ELEMENT collapsedref EMPTY>
<!ELEMENT shortcutref EMPTY>