These data types are constructed with:

<xml> ( prolog before body after -- xml )

<xml-chunk> ( seq -- xml-chunk )

<tag> ( name attrs children -- tag )

<name> ( space main url -- name )

<contained-tag> ( name attrs -- tag )

<prolog> ( version encoding standalone -- prolog )

<comment> ( text -- comment )

<instruction> ( text -- instruction )

<unescaped> ( string -- unescaped )

<simple-name> ( string -- name )

<element-decl> ( name content-spec -- element-decl )

<attlist-decl> ( name att-defs -- attlist-decl )

<entity-decl> ( name def pe? -- entity-decl )

<system-id> ( system-literal -- system-id )

<public-id> ( pubid-literal system-literal -- public-id )

<doctype-decl> ( name external-id internal-subset -- doctype-decl )

<notation-decl> ( name id -- notation-decl )