определить значения для termios (define values for termios)
Использование в приложениях (Application usage)
The following names are reserved for XSI-conformant systems to
use as an extension to the above; therefore strictly conforming
applications shall not use them:
CBAUD EXTB VDSUSP
DEFECHO FLUSHO VLNEXT
ECHOCTL LOBLK VREPRINT
ECHOKE PENDIN VSTATUS
ECHOPRT SWTCH VWERASE
EXTA VDISCARD
