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Solar X-rays
Status
Status
Geomagnetic Field

ASCII Control Codes

01 Nov 2003
Updated 03 May 2005


ASCII Control Codes
Code Name Note
NUL Null  
SOH Start of Heading  
STX Start of Text  
ETX End of Text  
EOT End of Transmission Not the same as ETB
ENQ Enquiry  
ACK Acknowledge  
BEL Bell Causes teletype machines to ring a bell. Causes a beep in many common terminals and terminal emulation programs.
BS Backspace Moves the cursor or print head backwards (left) one space.
TAB Horizontal Tab Moves the cursor or print head right to the next tab stop. The spacing of tab stops is dependent on the output device, but is often either 8 or 10.
LF Line Feed Moves the cursor or print head to a new line. On Unix systems, moves to a new line AND all the way to the left.
VT Vertical Tab  
FF Form Feed Advances paper to the top of the next page if the output device is a printer
CR Carriage Return Moves the cursor all the way to the left, but does not advance to the next line
SO Shift Out Switches output device to alternate character set
SI Shift In Switches output device back to default character set
DLE Data Link Escape  
DC1 Device Control 1  
DC2 Device Control 2  
DC3 Device Control 3  
DC4 Device Control 4  
NAK Negative Acknowledge  
SYN Synchronous Idle  
ETB End of Transmission Block Not the same as EOT
CAN Cancel  
EM End of Medium  
SUB Substitute  
ESC Escape  
FS File Separator  
GS group separator  
RS record separator  
US unit separator  


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