hidden(WS)
Model:
	greetings+=Greeting*;
	
Greeting:
	{Greeting} 'greet' NEXT_LINE
	BEGIN
		(exp+=ID)*
	END
;
terminal BEGIN: 'synthetic:BEGIN';  // increase indentation
terminal END: 'synthetic:END';      // decrease indentation
terminal ID:
    '^'?('a'..'z'|'A'..'Z'|'_')('a'..'z'|'A'..'Z'|'_'|'0'..'9')*;
terminal NEXT_LINE:
	('\n'|'\r')+;
terminal WS:
    (' '|'\t')+;

Model:
	(greetings+=Greeting NEW_LINE?)*;
	
Greeting:
	{Greeting} 'greet' NEXT_LINE
	BEGIN
		(exp+=ID NEW_LINE?)*
	END
	NEW_LINE*
;