/* ASCII control codes */ #define NUL '\000' #define SOH '\001' #define STX '\002' #define ETX '\003' #define EOT '\004' #define ENQ '\005' #define ACK '\006' #define BEL '\007' #define BS '\010' #define HT '\011' #define LF '\012' #define VT '\013' #define FF '\014' #define CR '\015' #define SO '\016' #define SI '\017' #define DLE '\020' #define DC1 '\021' #define DC2 '\022' #define DC3 '\023' #define DC4 '\024' #define NAK '\025' #define SYN '\026' #define ETB '\027' #define CAN '\030' #define EM '\031' #define SUB '\032' #define ESC '\033' #define FS '\034' #define GS '\035' #define RS '\036' #define US '\037' #define SP '\040' #define DEL '\177' #define XON DC1 #define XOFF DC3