| 版本 | 最终码位[a] | 码位数 | UTC ID | L2 ID | WG2 ID | 文档 | 
| 1.0.0 | U+02B0..02DD | 46 |  |  |  | (待考) | 
| UTC/1999-017 |  |  | Davis, Mark, Data cross-checks (for Agenda), 1999-06-02 | 
|  | L2/99-176R |  | Moore, Lisa, Data Cross-Checks, Minutes from the joint UTC/L2 meeting in Seattle, June 8-10, 1999, 1999-11-04 | 
|  | L2/99-246 | N2043 (页面存档备份,存于互联网档案馆) | Everson, Michael, On the apostrophe and quotation mark, with a note on Egyptian transliteration characters, 1999-07-24 | 
|  | L2/06-373 |  | Proposal for additional character, 2006-11-04 | 
|  | L2/06-398 |  | Pandey, Anshuman, Comments on L2/06-373 (addition of 'apostrophe' to Devanagari), 2006-12-15 | 
|  | L2/07-272 |  | Muller, Eric, 9, Report of the South Asia subcommittee, 2007-08-10 | 
|  | L2/07-225 |  | Moore, Lisa, Devanagari, UTC #112 Minutes, 2007-08-21 | 
|  | L2/08-197 |  | Representation of Bodo, Dogri and Maithili languages in Unicode Standard, 2008-05-06 | 
|  | L2/08-210 |  | Lata, Swaran, Usage examples for Bodo, Dogri, Maithili tone marker, 2008-05-07 | 
|  | L2/12-065 | N4281 (页面存档备份,存于互联网档案馆) | Pentzlin, Karl, Proposal for additional annotations for some modifier letters used for transliteration of Hebrew, 2012-02-05 | 
| U+02DE, 02E0..02E9 | 11 | UTC/1991-048B |  |  | Whistler, Ken, IPA additions, Draft Minutes from the UTC meeting #46 day 2, 3/27 at Apple, 1991-03-27 | 
|  | L2/00-421 | N2307 (页面存档备份,存于互联网档案馆) | Whistler, Ken, Response to Japanese Query re IPA tone letters, 2000-11-27 | 
|  | L2/01-025 | N2312 (页面存档备份,存于互联网档案馆) | Constable, Peter, Presentation of tone contours encoded as UCS tone letter sequences, 2001-01-08 | 
| 3.0 | U+02DF | 1 |  | L2/98-261 | N1812 (pdf, html (页面存档备份,存于互联网档案馆)) | Ellert, Mattias, Proposal to encode CROSS ACCENT in ISO/IEC 10646, 1998-05-21 | 
|  | L2/98-372 | N1884R2 (pdf, doc (页面存档备份,存于互联网档案馆)) | Whistler, Ken;  et al, Additional Characters for the UCS, 1998-09-22 | 
|  | L2/98-329 | N1920 (页面存档备份,存于互联网档案馆) | Combined PDAM registration and consideration ballot on WD for  ISO/IEC 10646-1/Amd. 30,  AMENDMENT 30: Additional Latin and other characters, 1998-10-28 | 
|  | L2/99-010 | N1903 (pdf, html (页面存档备份,存于互联网档案馆), doc (页面存档备份,存于互联网档案馆)) | Umamaheswaran, V. S., 8.2.5, Minutes of WG 2 meeting 35, London, U.K.; 1998-09-21--25, 1998-12-30 | 
| U+02EA..02EB | 2 |  | L2/98-090 | N1713R (页面存档备份,存于互联网档案馆) | Proposal to add 24 extended Bopomofo and 2 modifier letters for Minnan and Hakka, 1998-03-19 | 
|  | L2/98-158 |  | Aliprand, Joan; Winkler, Arnold, Bopomofo Extensions, Draft Minutes - UTC #76 & NCITS Subgroup L2 #173 joint meeting, Tredyffrin, Pennsylvania, April 20-22, 1998, 1998-05-26 | 
|  | L2/98-286 | N1703 (页面存档备份,存于互联网档案馆) | Umamaheswaran, V. S.; Ksar, Mike, 8.25, Unconfirmed Meeting Minutes, WG 2 Meeting #34, Redmond, WA, USA; 1998-03-16--20, 1998-07-02 | 
|  | L2/98-321 | N1905 (页面存档备份,存于互联网档案馆) | Revised text of 10646-1/FPDAM 23, AMENDMENT 23: Bopomofo Extended and other characters, 1998-10-22 | 
| U+02EC..02ED | 2 |  | L2/98-299 | N1845 (页面存档备份,存于互联网档案馆) | Everson, Michael, Additional IPA “disturbed speech” characters for the UCS, 1998-09-08 | 
|  | L2/98-372 | N1884R2 (pdf, doc (页面存档备份,存于互联网档案馆)) | Whistler, Ken;  et al, Additional Characters for the UCS, 1998-09-22 | 
|  | L2/98-329 | N1920 (页面存档备份,存于互联网档案馆) | Combined PDAM registration and consideration ballot on WD for  ISO/IEC 10646-1/Amd. 30,  AMENDMENT 30: Additional Latin and other characters, 1998-10-28 | 
|  | L2/06-231 |  | Moore, Lisa, Consensus 108-C3, UTC #108 Minutes, 2006-08-17, Change the general category of U+02EC MODIFIER LETTER VOICING from "Sk" to "Lm". | 
| U+02EE | 1 |  | L2/98-295 | N1817 (页面存档备份,存于互联网档案馆) | Everson, Michael, Proposal to add the letter MODIFIER LETTER DOUBLE APOSTROPHE in the BMP, 1997-08-10 | 
|  | L2/98-372 | N1884R2 (pdf, doc (页面存档备份,存于互联网档案馆)) | Whistler, Ken;  et al, Additional Characters for the UCS, 1998-09-22 | 
|  | L2/98-329 | N1920 (页面存档备份,存于互联网档案馆) | Combined PDAM registration and consideration ballot on WD for  ISO/IEC 10646-1/Amd. 30,  AMENDMENT 30: Additional Latin and other characters, 1998-10-28 | 
|  | L2/99-010 | N1903 (pdf, html (页面存档备份,存于互联网档案馆), doc (页面存档备份,存于互联网档案馆)) | Umamaheswaran, V. S., 8.2.2, Minutes of WG 2 meeting 35, London, U.K.; 1998-09-21--25, 1998-12-30 | 
| 4.0 | U+02EF..02FF | 17 |  | L2/02-141 | N2419 (页面存档备份,存于互联网档案馆) | Everson, Michael;  et al, Uralic Phonetic Alphabet characters for the UCS, 2002-03-20 | 
|  | L2/02-192 |  | Everson, Michael, Everson's Reply on UPA, 2002-05-02 | 
|  |  | N2442 (页面存档备份,存于互联网档案馆) | Everson, Michael; Kolehmainen, Erkki I.; Ruppel, Klaas; Trosterud, Trond, Justification for placing the Uralic Phonetic Alphabet in the BMP, 2002-05-21 | 
|  | L2/02-291 |  | Whistler, Ken, WG2 report from Dublin, 2002-05-31 | 
|  | L2/02-292 |  | Whistler, Ken, Early look at WG2 consent docket, 2002-06-03 | 
|  | L2/02-166R2 |  | Moore, Lisa, Scripts and New Characters - UPA, UTC #91 Minutes, 2002-08-09 | 
|  | L2/02-253 |  | Moore, Lisa, Consensus 92-C2, UTC #92 Minutes, 2002-10-21 | 
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