Control Pictures is the name of a range of characters in the Unicode character encoding standard.

The C0 control codes and space, U+0000 thru U+0020, sometimes need to be displayed in a human readable way, and thus a conventional representation has been developed for these nongraphic characters.

The CNS 11643 standard encodes characters for pictures of control codes. Two other standards define the glyphs :

  • ISO 2047:1975 Information processing -- Graphical representations for the control characters of the 7- bit coded character set
  • ANSI X3.32:1990, American National Standard for Graphic Representation of the Control Characters of the American National Code for Information Interchange

In addition to the standard glyph for space, , two additional glyphs are supplied to represent a space : and .

Unicode's Control Pictures code block reserves the 64 code points from U+2400 to U+243F, of which 39 are currently assigned.

Miscellaneous Technical <-- Control Pictures --> Optical Character Recognition
The diagonal lettering glyphs are only exemplary; alternate representations may be, and often are used in the visible display of control codes.

Number of characters added in each version of the Unicode standard :
Unicode 1.1 : 37
Unicode 3.0 : 2

All the characters in this code block are in general category Symbol, Other So

All the characters in this code block are in bidirectional category Other Neutral ON

The columns below should be interpreted as :

  1. The Unicode code for the character
  2. The character in question
  3. The Unicode name for the character
  4. The Unicode version when this character was added

If the characters below show up poorly, or not at all, see Unicode Support for possible solutions.


Control Pictures

     Graphic pictures for control codes

U+2400   ␀   symbol for null 1.1
U+2401   ␁   symbol for start of heading 1.1
U+2402   ␂   symbol for start of text 1.1
U+2403   ␃   symbol for end of text 1.1
U+2404   ␄   symbol for end of transmission 1.1
U+2405   ␅   symbol for enquiry 1.1
U+2406   ␆   symbol for acknowledge 1.1
U+2407   ␇   symbol for bell 1.1
U+2408   ␈   symbol for backspace 1.1
U+2409   ␉   symbol for horizontal tabulation 1.1
U+240A   ␊   symbol for line feed 1.1
U+240B   ␋   symbol for vertical tabulation 1.1
U+240C   ␌   symbol for form feed 1.1
U+240D   ␍   symbol for carriage return 1.1
U+240E   ␎   symbol for shift out 1.1
U+240F   ␏   symbol for shift in 1.1
U+2410   ␐   symbol for data link escape 1.1
U+2411   ␑   symbol for device control one 1.1
U+2412   ␒   symbol for device control two 1.1
U+2413   ␓   symbol for device control three 1.1
U+2414   ␔   symbol for device control four 1.1
U+2415   ␕   symbol for negative acknowledge 1.1
U+2416   ␖   symbol for synchronous idle 1.1
U+2417   ␗   symbol for end of transmission block 1.1
U+2418   ␘   symbol for cancel 1.1
U+2419   ␙   symbol for end of medium 1.1
U+241A   ␚   symbol for substitute 1.1
U+241B   ␛   symbol for escape 1.1
U+241C   ␜   symbol for file separator 1.1
U+241D   ␝   symbol for group separator 1.1
U+241E   ␞   symbol for record separator 1.1
U+241F   ␟   symbol for unit separator 1.1
U+2420   ␠   symbol for space 1.1
U+2421   ␡   symbol for delete 1.1

     Specific symbols for space

U+2422   ␢   blank symbol 1.1
* graphic for space
ref U+0180   ƀ   Latin small letter B with stroke (Latin Extended B)
U+2423   ␣   open box 1.1
sgml &blank;
* graphic for space
ref U+2334   ⌴   counterbore (Miscellaneous Technical)

     Graphic picture for control code

U+2424   ␤   symbol for newline 1.1

     Keyboard symbol

U+2425   ␥   symbol for delete form two 3.0
* from ISO 9995-7
* keyboard symbol for undoable delete

     Specific symbol for control code

U+2426   ␦   symbol for substitute form two 3.0
* from ISO 2047
ref U+061F   ؟   Arabic question mark (Arabic)
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