typedef union	{
			int					i;
			char				*str;
			struct objport_t	obj;
			struct Agnode_t		*n;
} YYSTYPE;
#define	T_graph	257
#define	T_digraph	258
#define	T_strict	259
#define	T_node	260
#define	T_edge	261
#define	T_edgeop	262
#define	T_symbol	263
#define	T_qsymbol	264
#define	T_subgraph	265


extern YYSTYPE aglval;
