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/* ED0.C */ 
 
#define MAXLEN	80	/* 80 character video screen */ 
#define MAXLEN1 81	/* MAXLEN+1 */ 
#define SYSFNMAX 15 
#define EOS	0 
#define OK	1 
#define ERR	-1 
#define EOF	-2 
#define YES	1 
#define NO	0 
#define CR	13 
#define LF	10 
#define TAB	9 
#define HUGE	32000