Control Pictures
Unicode character block
Control Pictures is a Unicode block containing characters for graphically representing the C0 control codes, and other control characters. Its block name in Unicode 1.0 was Pictures for Control Codes.
Code points U+0000 NULL to U+0020 SPACE can be mapped onto their corresponding control picture by incrementing the code point by 0x2400. For example, the corresponding control picture for U+000A LINE FEED is 0x000A + 0x2400 = 0x240A (␊).
01Block
02History
The following Unicode-related documents record the purpose and process of defining specific characters in the Control Pictures block:
| Version | Final code points | Count | L2 ID | WG2 ID | Document |
|---|---|---|---|---|---|
| 1.0.0 | U+2400..2424 | 37 | (to be determined) | ||
| 3.0 | U+2425 | 1 | N1138 | LaBonté, Alain (1995-01-30), Proposal to add new characters (Keyboard related) to 10646 | |
| N1203 | Umamaheswaran, V. S.; Ksar, Mike (1995-05-03), "6.1.6", Unconfirmed minutes of SC2/WG2 Meeting 27, Geneva | ||||
| N1303 (html, doc) | Umamaheswaran, V. S.; Ksar, Mike (1996-01-26), Minutes of Meeting 29, Tokyo | ||||
| L2/97-128 | N1564 | Paterson, Bruce (1997-05-15), Draft pDAM for various additional characters (the "holding bucket") | |||
| L2/97-288 | N1603 | Umamaheswaran, V. S. (1997-10-24), "7.3", Unconfirmed Meeting Minutes, WG 2 Meeting # 33, Heraklion, Crete, Greece, 20 June, 4 July 1997 | |||
| L2/98-005R | N1682 | Text of ISO 10646 - AMD 22 for PDAM registration and PDAM ballot, 1997-12-17 | |||
| L2/98-320 | N1898 | ISO/IEC 10646-1/FPDAM 22, AMENDMENT 22: Keyboard Symbols, 1998-10-22 | |||
| N1897 | Paterson, Bruce; Everson, Michael (1998-10-22), Disposition of Comments - FPDAM22 - Keyboard Symbols - SC2 N3191 | ||||
| L2/99-010 | N1903 (pdf, html, doc) | Umamaheswaran, V. S. (1998-12-30), Minutes of WG 2 meeting 35, London, U.K.; 1998-09-21--25 | |||
| L2/99-126 | Paterson, Bruce (1999-04-14), Text for FDAM ballot ISO/IEC 10646 FDAM #22 - Keyboard symbols | ||||
| U+2426 | 1 | N1045 | Defect Report on 10646 Repoertoire (Add ISO 2047symbols), 1994-08-01 | ||
| N1203 | Umamaheswaran, V. S.; Ksar, Mike (1995-05-03), "6.1.3.2", Unconfirmed minutes of SC2/WG2 Meeting 27, Geneva | ||||
| L2/98-004R | N1681 | Text of ISO 10646, AMD 18 for PDAM registration and FPDAM ballot, 1997-12-22 | |||
| N1875 | Defect Report on REVERSED QUESTION MARK in FPDAM 18, 1998-09-22 | ||||
| L2/98-318 | N1894 | Revised text of 10646-1/FPDAM 18, AMENDMENT 18: Symbols and Others, 1998-10-22 | |||
| L2/99-010 | N1903 (pdf, html, doc) | Umamaheswaran, V. S. (1998-12-30), "6.7.3", Minutes of WG 2 meeting 35, London, U.K.; 1998-09-21--25 | |||
| 16.0 | U+2427..2429 | 3 | L2/21-235 (full, no_attach, sources, mappings_zip) | Bettencourt, Rebecca; Ewell, Doug; Bánffy, Ricardo; Everson, Michael; Hietaniemi, Jarkko; Silva, Eduardo Marín; Mårtenson, Elias; Shoulson, Mark; Steele, Shawn; Turner, Rebecca (2021-12-20), Proposal to add further characters from legacy computers and teletext to the UCS | |
| L2/22-023 | Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Constable, Peter (2022-01-22), "17 Legacy Computing Symbols", Recommendations to UTC #170 January 2022 on Script Proposals | ||||
| L2/21-235R (full, no_attach) | Bettencourt, Rebecca; Ewell, Doug; Bánffy, Ricardo; Everson, Michael; Hietaniemi, Jarkko; Silva, Eduardo Marín; Mårtenson, Elias; Shoulson, Mark; Steele, Shawn; Turner, Rebecca (2022-01-26), Proposal to add further characters from legacy computers and teletext to the UCS | ||||
| L2/22-016 | Constable, Peter (2022-04-21), "D.1 17 Legacy Computing Symbols", UTC #170 Minutes | ||||
Sources and credits
This article is adapted from the Wikipedia article “Control Pictures”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
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