<!-- Syntax tokens -->
<!ENTITY % tokens "( NULL | COMMENT1 | COMMENT2 | LITERAL1 | LITERAL2
	| LABEL | KEYWORD1 | KEYWORD2 | KEYWORD3 | FUNCTION
	| MARKUP | OPERATOR | DIGIT | INVALID )" >

<!-- Entities for attributes shared by multiple rules -->
<!ENTITY % att-bool '( TRUE | FALSE )' >
<!ENTITY % att-type 'TYPE %tokens; "NULL"' >
<!ENTITY % att-at-line-start 'AT_LINE_START %att-bool; "FALSE"' >
<!ENTITY % att-exclude-match 'EXCLUDE_MATCH %att-bool; "FALSE"' >

<!-- MODE element -->
<!ELEMENT MODE ( PROPS?, RULES* ) >

<!-- MODE children -->
<!-- PROPS element -->
<!ELEMENT PROPS ( PROPERTY+ ) >

<!-- PROPS children -->
<!ELEMENT PROPERTY EMPTY >
<!ATTLIST PROPERTY
	NAME CDATA #REQUIRED
	VALUE CDATA #REQUIRED >

<!-- RULES element -->
<!ELEMENT RULES ( ( TERMINATE | WHITESPACE | SPAN | EOL_SPAN | MARK_PREVIOUS
	| MARK_FOLLOWING | SEQ )*, KEYWORDS? ) >

<!-- RULES attributes -->
<!ATTLIST RULES
	IGNORE_CASE %att-bool; "FALSE"
	HIGHLIGHT_DIGITS %att-bool; "FALSE"
	SET CDATA "MAIN"
	ESCAPE CDATA #IMPLIED
	DEFAULT %tokens; "NULL" >

<!-- RULES children -->
<!-- TERMINATE element -->
<!ELEMENT TERMINATE EMPTY >

<!-- TERMINATE attributes -->
<!ATTLIST TERMINATE AT_CHAR CDATA #REQUIRED >

<!-- WHITESPACE element -->
<!ELEMENT WHITESPACE ( #PCDATA ) >

<!-- SPAN element -->
<!ELEMENT SPAN ( BEGIN, END ) >

<!-- SPAN attributes -->
<!ATTLIST SPAN
	%att-type;
	%att-at-line-start;
	%att-exclude-match;
	NO_LINE_BREAK %att-bool; "FALSE"
	NO_WORD_BREAK %att-bool; "FALSE"
	DELEGATE CDATA #IMPLIED >

<!-- SPAN children -->
<!ELEMENT BEGIN ( #PCDATA ) >
<!ELEMENT END ( #PCDATA ) >

<!-- EOL_SPAN element -->
<!ELEMENT EOL_SPAN ( #PCDATA ) >

<!-- EOL_SPAN attributes -->
<!ATTLIST EOL_SPAN
	%att-type;
	%att-at-line-start;
	%att-exclude-match; >

<!-- MARK_PREVIOUS element -->
<!ELEMENT MARK_PREVIOUS ( #PCDATA ) >

<!-- MARK_PREVIOUS attributes -->
<!ATTLIST MARK_PREVIOUS
	%att-type;
	%att-at-line-start;
	%att-exclude-match; >

<!-- MARK_FOLLOWING element -->
<!ELEMENT MARK_FOLLOWING ( #PCDATA ) >

<!-- MARK_FOLLOWING attributes -->
<!ATTLIST MARK_FOLLOWING
	%att-type;
	%att-at-line-start;
	%att-exclude-match; >

<!-- SEQ element -->
<!ELEMENT SEQ ( #PCDATA ) >

<!-- SEQ attributes -->
<!ATTLIST SEQ
	%att-type;
	%att-at-line-start; >

<!-- KEYWORDS element -->
<!ELEMENT KEYWORDS ( NULL | COMMENT1 | COMMENT2 | LITERAL1 | LITERAL2
	| LABEL | KEYWORD1 | KEYWORD2 | KEYWORD3 | FUNCTION | MARKUP
	| OPERATOR | DIGIT | INVALID )+ >

<!-- KEYWORDS attributes -->
<!ATTLIST KEYWORDS
	IGNORE_CASE %att-bool; "FALSE" >

<!-- KEYWORDS children -->
<!ELEMENT NULL ( #PCDATA ) >
<!ELEMENT COMMENT1 ( #PCDATA ) >
<!ELEMENT COMMENT2 ( #PCDATA ) >
<!ELEMENT LITERAL1 ( #PCDATA ) >
<!ELEMENT LITERAL2 ( #PCDATA ) >
<!ELEMENT LABEL ( #PCDATA ) >
<!ELEMENT KEYWORD1 ( #PCDATA ) >
<!ELEMENT KEYWORD2 ( #PCDATA ) >
<!ELEMENT KEYWORD3 ( #PCDATA ) >
<!ELEMENT FUNCTION ( #PCDATA ) >
<!ELEMENT MARKUP ( #PCDATA ) >
<!ELEMENT OPERATOR ( #PCDATA ) >
<!ELEMENT DIGIT ( #PCDATA ) >
<!ELEMENT INVALID ( #PCDATA ) >