Brutusext: module{	# More tags, needed by Cook	SGML, Text, Par, Extension, Float, Special: con Brutus->NTAG + iota; 	# Output formats	FLatex, FLatexProc, FLatexBook, FLatexPart, FLatexSlides, FLatexPaper, FHtml: con iota; 	# Cook element	Celem: adt	{		tag: int;		s: string;		contents: cyclic ref Celem;		parent: cyclic ref Celem;		next: cyclic ref Celem;		prev: cyclic ref Celem;	};  	init:	fn(sys: Sys, draw: Draw, bufio: Bufio, tk: Tk, tkclient: Tkclient);	create:	fn(parent: string, t: ref Tk->Toplevel, name, args: string): string;	cook:	fn(parent: string, fmt: int, args: string) : (ref Celem, string);};