Hi! Can please tell me what my mistake is? I am using ANTLR works for debugging but just in interpreter mode. I have following grammar: mydoc : ( doc_line )*; doc_line: begin_end_block | single_cmd | word ; begin_end_block : '\begin' '{' ID '}' ( options { greedy=false; } : doc_line )* '\end{' ID '}' ; single_cmd : '\\'ID ; word : ID; ID : ('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'0'..'9'|'_')* ; When I let try to interprete: egin{asf}end{asf} est oom I get: begin_end_block, single_cmd, word    More>>

			mydoc : ( doc_line )*;
			

			

			doc_line:  begin_end_block | single_cmd | word  ;
			

			

			begin_end_block
			

			: '\begin' '{' ID '}'
			

			(
			

			options { greedy=false; } :  doc_line
			

			)*
			

			'\end{' ID '}'
			

			;
			

			

			single_cmd
			

			: '\\'ID
			

			;
			

			

			word : ID;
			

			

			ID  : ('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'0'..'9'|'_')*
			

			;
		

egin{asf}end{asf} est oom