control character
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... Control Characters ...
... FE) Format Effector
(IS) Information Separator
[1] In the strict sense, DEL is not a control character. (See 5.2)
...
... Control Characters ...
... SOH (Start of Heading): A communication control character used at
the beginning of a sequence of characters which constitute a
machine-sensible address ...
... terminating a heading.
STX (Start of Text): A communication control character which
precedes a sequence of characters that is to be treated as an entity
...
... sequence of characters started by SOH.
ETX (End of Text): A communication control character used to
terminate a sequence of characters started with STX and transmitted
as an entity ...
... as an entity.
EOT (End of Transmission): A communication control character used
to indicate the conclusion of a transmission, which may have
contained one or more texts and any associated headings.
...
... to indicate the conclusion of a transmission, which may have
contained one or more texts and any associated headings.
ENQ (Enquiry): A communication control character used in data
communication systems as a request for a response from a remote
station. It may be used as a "Who Are You" (WRU) to obtain
...
... identification, or may be used to obtain station status, or both.
ACK (Acknowledge): A communication control character transmitted
by a receiver as an affirmative response to a sender ...
... movement of the printing position to the first printing position on
the same printing line. (Applicable also to display devices.)
SO (Shift Out): A control character indicating that the code
combinations which follow shall be interpreted as outside of the
character set ...
... is reached.
SI (Shift In): A control character indicating that the code
combinations which follow shall be interpreted according to the
standard code table.
...
... standard code table.
DLE (Data Link Escape): A communication control character which
will change the meaning of a limited number of contiguously following
characters. It is used exclusively to provide supplementary controls
...
... off ancillary devices, DC4 is the preferred assignment.)
NAK (Negative Acknowledge): A communication control character
transmitted by a receiver as a negative response to the sender ...
... SYN (Synchronous Idle): A communication control character used by
a synchronous transmission system in the absence of any other
...
... character to provide a signal from which synchronism may be achieved
or retained.
ETB (End of Transmission Block): A communication control character
used to indicate the end of a block of data for communication
purposes. ETB is used for blocking data where the block structure is
...
... purposes. ETB is used for blocking data where the block structure is
not necessarily related to the processing format.
CAN (Cancel): A control character used to indicate that the data
with which it is sent is in error or is to be disregarded.
EM (End of Medium): A control character ...
... control character used to indicate that the data
with which it is sent is in error or is to be disregarded.
EM (End of Medium): A control character associated with the sent
data which may be used to identify the physical end of the medium, or
...
... character which is determined to be invalid or in error.
ESC (Escape): A control character intended to provide code
extension (supplementary characters) in general information
interchange. The Escape character itself is a prefix ...
... Delete): This character is used primarily to "erase" or
"obliterate" erroneous or unwanted characters in perforated tape.
(In the strict sense, DEL is not a control character.)
...
... standard does not define data communication character structure, data
communication formats, code extension techniques, or graphic
representation of control characters.
6.2 Deviations from the standard may create ...