Plumbing: module{ 	PATH:	con "/dis/lib/plumbing.dis"; 	Pattern: adt	{		field:		string;		pred:	string;		arg:		string;		extra:	list of string;		expand:	int;		regex:	Regex->Re;	}; 	Rule:	adt	{		pattern:	array of ref Pattern;		action:	array of ref Pattern;	}; 	init:	fn(regexmod: Regex, args: list of string): (list of ref Rule, string);};