Syntax of heitml

	heitmlpage::=	heitml * .

	heitml::=	HTMLText
	|	<? Expr [ Format ] >
	|	<assign Expr> heitml * </assign>
	|	<break>
	|	<def MethodName FormalParameterList > DefinitionModifiers heitml * </def>
	|	<defbody>
	|	<defclass ClassName > <inherit ClassName ([,] ClassName)* > heitml * </defclass>
	|	<defenv MethodName FormalParameterList > DefinitionModifiers heitml * </defenv>
	|	<dbquery [ VariableName ] > heitml * Section * </dbquery>
	|	<dbupdate> heitml * </dbupdate>
	|	<for VariableName = Expr Expr Expr > heitml * [ <forsep> heitml * ] </for>
	|	<forin VariableName Expr > heitml * [ <forsep> heitml * ] </forin>
	|	<if Expr > heitml * [ <elsif Expr > heitml * ] * [ <else> heitml * ] </if>
	|	<include Filename >
	|	<include name = "Filename" [ / ] >
	|	<include> heitml * </include>
	|	<mail ActualParameterList > heitml * </mail>
	|	<return [Expr] >
	|	<shell> heitml * </shell>
	|	< MethodName ActualParameterList > [ heitml * </ MethodName > ]
	|	< MethodName ActualParameterList />
	|	<callenv Expr . MethodName ( ActualParameterList ) > heitml * </ callenv>
	|	<while Expr > heitml * </while>
	|	<writefile Expr > heitml * </writefile>.

	DefinitionModifiers::=	[ <inherit ClassName ([,] ClassName)* > ]
		[ <defwysiwyg> ]
		[ <defhtml> ]
		[ <defautoclose> ].
	Section::=	<dbrow> heitml *
	|	<dbtop> heitml *
	|	<dbfoot> heitml *
	|	<dbempty> heitml *
	|	<dbhead> heitml *
	|	<dbbody> heitml *
	|	<dbcolumn> heitml *
	|	<dbrowend> heitml * .
	Format::=	html | text | quoted | heitml | hstv | furl | Expr .
	ActualParameterlist::=	( [ ParameterName = ] Expr ) * .
	FormalParameterlist::=	( ParameterName [= Expr ]  | * ParameterName  | ** ParameterName
		| @ VariableName  | @ this
		) * [ ... ] .
	Expr::=	Expr + Expr | Expr - Expr | Expr * Expr | Expr / Expr | Expr % Expr
	|	- Expr | ! Expr
	|	Expr == Expr | Expr != Expr
	|	Expr && Expr | Expr || Expr
	|	Expr < Expr | Expr &lt Expr | Expr &lt; Expr
	|	Expr <= Expr | Expr &le Expr | Expr &le; Expr
	|	Expr &gt Expr | Expr &gt; Expr
	|	Expr &ge Expr | Expr &ge; Expr
	|	( Expr )
	|	Expr [ Expr ]
	|	Expr . FieldName
	|	Expr = Expr
	|	Expr , Expr
	|	Expr . MethodName ( ActualParameterList )
	|	Expr [ Expr ] ( ActualParameterList )
	|	FunctionName ( ActualParameterList )
	|	IntegerConst | RealConst | StringConst
	|	true | false | emptytuple | null | this | parent | creator
	|	VariableName.

Operator precedence: , = || && == != < <= &ge &gt &le &lt + - * / % unary - ! . [ ] ( ).

	VariableName::=	Identifier .
	FieldName::=	Identifier .
	ParameterName::=	Identifier .
	FunctionName::=	Identifier .
	MethodName::=	Identifier .
	ClassName::=	Identifier .