/*	b.h	4.2	83/08/11	*/extern int xxindent, xxval, newflag, xxmaxchars, xxbpertab;extern int xxlineno;		/* # of lines already output */#define xxtop	100		/* max size of xxstack */extern int xxstind, xxstack[xxtop], xxlablast, xxt;struct node	{int op;	char *lit;	struct node *left;	struct node *right;	};