63
.
:
3.   PTY    .
, .
 2 ,  
. ,  NO
PTY, , NO PTY .
4.  PTY ,  PTY.
 REG
 PTY  2 ,  REG ON  REG OFF.
- REGION ON ():
 AF   
, .  REGION ON.
- REGION OFF ():
       AF  
.