7-BIT ASCII Device Control Characters

There is nothing to do by these characters inside an XHTML document. They were designed to control hardware parts like printers and tape drives.

Result Description Entity Number
NUL null character �
SOH start of header 
STX start of text 
ETX end of text 
EOT end of transmission 
ENQ enquiry 
ACK acknowledge 
BEL bell (ring) 
BS backspace 
HT horizontal tab 	
LF line feed 

VT vertical tab 
FF form feed 
CR carriage return 
SO shift out 
SI shift in 
DLE data link escape 
DC1 device control 1 
DC2 device control 2 
DC3 device control 3 
DC4 device control 4 
NAK negative acknowledge 
SYN synchronize 
ETB end transmission block 
CAN cancel 
EM end of medium 
SUB substitute 
ESC escape 
FS file separator 
GS group separator 
RS record separator 
US unit separator 
DEL delete (rubout)