121 #define	NO	0		/* mnemonic */  macro
180 	Intrupt=NO,		/* interrupt indicator */
184 	Divert=NO,		/* don't allow unsolicited redirection */
185 	OldStyle=NO,		/* don't handle old '~>:filename' syntax */
187 	Takeflag=NO,		/* indicates a ~%take is in progress */
188 	Dologin=NO,		/* go through the login chat sequence */
189 	Docmd=NO;		/* execute command instead of interactive cu */
342 		Duplex  = NO;  in main()
343 		Ifc = NO;  in main()
344 		Ofc = NO;  in main()
388 		line_8bit = ((*optarg=='7') ? NO : ((*optarg=='8') ? YES : -1));  in main()
546         Docmd=NO;  in main()
698 			if( w_char(Cn) == NO) {  in transmit()
730 		    Intrupt = NO;  in transmit()
735 		if(w_char(Cn) == NO) {  in transmit()
739 		if(Duplex == NO) {  in transmit()
740 		    if((w_char(TTYERR) == NO) || (wioflsh(TTYERR) == NO))  in transmit()
752 		    Takeflag = NO;  in transmit()
771     if(Takeflag == NO) {  in _flush()
777     Takeflag = NO;  in _flush()
869     return(NO);
1067 	Intrupt = NO;  in _dopercen()
1077 	while(Intrupt == NO &&  in _dopercen()
1110 	    Intrupt = NO;  in _dopercen()
1221     int silent = NO, file = -1;  in _receive()
1224     int for_me = NO;  in _receive()
1237 	if (rval == NO) {  in _receive()
1256 	if(silent == NO)    /* ie., if not redirecting from screen */  in _receive()
1257 	    if(w_char(TTYOUT) == NO)  in _receive()
1276 		for_me = NO;  in _receive()
1290 		    silent = NO;  in _receive()
1303 		    if ( (for_me || (OldStyle && (*b_p == ':'))) && (silent == NO) ) {  in _receive()
1387 	    if(Ifc == NO)  in _mode()
1391 	    if(Ofc == NO)  in _mode()
1444 	if ( (wioflsh(Cn) == NO ) || (wioflsh(TTYOUT) == NO) )  in r_char()
1445 	    return(NO);  in r_char()
1480 	return(NO);  in r_char()
1496 	if ( wioflsh(fd) == NO )  in w_char()
1497 	    return(NO);  in w_char()
1525 		return(NO);			/* bad news */  in wioflsh()