text: 
  #define TTYDEF_IFLAG (BRKINT | ISTRIP | ICRNL | IMAXBEL | IXON | IXANY)
  #define TTYDEF_OFLAG (OPOST | ONLCR | XTABS)
  #define TTYDEF_LFLAG (ECHO | ICANON | ISIG | IEXTEN | ECHOE|ECHOKE|ECHOCTL)
  #define TTYDEF_CFLAG (CREAD | CS7 | PARENB | HUPCL)
  #define TTYDEF_SPEED (B9600)
  #define CTRL(x) (x&037)
  #define CEOF CTRL('d')
  
  #define CEOL '\0'
  #define CSTATUS '\0'
  
  #define CERASE 0177
  #define CINTR CTRL('c')
  #define CKILL CTRL('u')
  #define CMIN 1
  #define CQUIT 034
  #define CSUSP CTRL('z')
  #define CTIME 0
  #define CDSUSP CTRL('y')
  #define CSTART CTRL('q')
  #define CSTOP CTRL('s')
  #define CLNEXT CTRL('v')
  #define CDISCARD CTRL('o')
  #define CWERASE CTRL('w')
  #define CREPRINT CTRL('r')
  #define CEOT CEOF
  #define CBRK CEOL
  #define CRPRNT CREPRINT
  #define CFLUSH CDISCARD
  
  