anchor.diff:  	: ((NAME) => NAME (COMMA! t:NAME)* | )
   		{ ## = #(#[PARAMS,"PARAMS"], ##) }
   	;
  -
  -exp_list: (expr (COMMA! expr)* )?;
   
   assign_rt
   	: ASSIGNTYPE^ variable EQUATE! expr
  
positive.code: 	: DECOR^
  	;
  
  rt_list
  	: (rt)+
  		{ ## = #(#[RTL,"RTL"], ##) }
  
negative.code: 
  constant_expr
  	: NUM ((PLUS^|MINUS^) NUM)*
  	;
  
  registers_decl!
  