組合附加符號擴展
歷史

以下Unicode文檔記錄了定義本區塊中特定字符的目的與過程：
| 版本 | 最終碼位 | 碼位数 | L2（英语：） ID | WG2（英语：） ID | 文檔 |
| --- | --- | --- | --- | --- | --- |
| 7.0 | U+1AB0..1ABE | 15 | L2/08-428 | N3555 （页面存档备份，存于） | Everson, Michael, , 2008-11-27  |
| 7.0 | U+1AB0..1ABE | 15 | L2/10-346 | N3907 （页面存档备份，存于） | Everson, Michael; Wandl-Vogt, Eveline; Dicklberger, Alois, , 2010-09-23  |
| 7.0 | U+1AB0..1ABE | 15 | L2/11-137 | N4031 （页面存档备份，存于） | Everson, Michael; Wandl-Vogt, Eveline; Dicklberger, Alois, , 2011-05-09  |
| 7.0 | U+1AB0..1ABE | 15 | L2/11-203 | N4082 （页面存档备份，存于） | Everson, Michael;  et al, , 2011-05-27  |
| 7.0 | U+1AB0..1ABE | 15 | L2/11-202 | N4081 （页面存档备份，存于） | Everson, Michael; Dicklberger, Alois; Pentzlin, Karl; Wandl-Vogt, Eveline, , 2011-06-02  |
| 7.0 | U+1AB0..1ABE | 15 | L2/11-240 | N4106 （页面存档备份，存于） | Everson, Michael; Pentzlin, Karl, , 2011-06-09  |
| 7.0 | U+1AB0..1ABE | 15 | L2/12-269 | N4296 （页面存档备份，存于） | Everson, Michael, , 2012-07-26  |
| 13.0 | U+1ABF..1AC0 | 2 | L2/19-075R | N5036R （页面存档备份，存于） | Everson, Michael, , 2019-05-05  |
| 13.0 | U+1ABF..1AC0 | 2 | L2/19-173 |  | Anderson, Deborah;  et al, , , 2019-04-29  |
| 13.0 | U+1ABF..1AC0 | 2 | L2/19-122 |  | Moore, Lisa, , , 2019-05-08  |
| 13.0 | U+1ABF..1AC0 | 2 |  | N5122 （页面存档备份，存于） | , , 2019-12-31  |
| 13.0 | U+1ABF..1AC0 | 2 | L2/20-052 |  | Pournader, Roozbeh, , 2020-01-15  |
| 13.0 | U+1ABF..1AC0 | 2 | L2/20-015 |  | Moore, Lisa, , , 2020-01-23  |
| 14.0 | U+1AC1..1AC4 | 4 | L2/20-039 |  | Miller, Kirk; Ball, Martin, , 2020-01-08  |
| 14.0 | U+1AC1..1AC4 | 4 | L2/20-046 |  | Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Moore, Lisa; Liang, Hai, , , 2020-01-10  |
| 14.0 | U+1AC1..1AC4 | 4 | L2/20-116 |  | Miller, Kirk; Ball, Martin, , 2020-04-14  |
| 14.0 | U+1AC1..1AC4 | 4 | L2/20-105 |  | Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Moore, Lisa; Constable, Peter; Liang, Hai, , , 2020-04-20  |
| 14.0 | U+1AC1..1AC4 | 4 | L2/20-116R |  | Miller, Kirk; Ball, Martin, , 2020-07-11  |
| 14.0 | U+1AC1..1AC4 | 4 | L2/20-169 |  | Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Moore, Lisa; Constable, Peter; Liang, Hai, , , 2020-07-21  |
| 14.0 | U+1AC1..1AC4 | 4 | L2/20-172 |  | Moore, Lisa, , , 2020-08-03  |
| 14.0 | U+1AC1..1AC4 | 4 | L2/21-021 |  | Anderson, Deborah, , 2020-12-07  |
| 14.0 | U+1AC1..1AC4 | 4 | L2/21-009 |  | Moore, Lisa, , , 2021-01-27  |
| 14.0 | U+1AC5, 1AC7..1ACA | 5 | L2/21-042 |  | Miller, Kirk, , 2021-01-11  |
| 14.0 | U+1AC5, 1AC7..1ACA | 5 | L2/21-016R |  | Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Moore, Lisa; Liang, Hai, , , 2021-01-14  |
| 14.0 | U+1AC5, 1AC7..1ACA | 5 | L2/21-009 |  | Moore, Lisa, , , 2021-01-27  |
| 14.0 | U+1AC5, 1AC7..1ACA | 5 | L2/21-069R |  | Scherer, Markus; Davis, Mark; Freytag, Asmus; Chapman, Christopher; Whistler, Ken; Constable, Peter, , , 2021-04-26, For Unicode version 14.0, reassign six code points U+1AC9..1ACE as noted in L2/21-069 item PRI428a.  |
| 14.0 | U+1AC5, 1AC7..1ACA | 5 | L2/21-066 |  | Moore, Lisa, , , 2021-05-05, For Unicode version 14.0, reassign six code points U+1AC9..1ACE as noted in L2/21-069 item PRI428a.  |
| 14.0 | U+1AC6 | 1 | L2/20-182 |  | Miller, Kirk; Henry-Rodriguez, Timothy, , 2020-07-11  |
| 14.0 | U+1AC6 | 1 | L2/20-169 |  | Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Moore, Lisa; Constable, Peter; Liang, Hai, , , 2020-07-21  |
| 14.0 | U+1AC6 | 1 | L2/20-172 |  | Moore, Lisa, , , 2020-08-03  |
| 14.0 | U+1ACB..1ACE | 4 | L2/19-178 | N5043 （页面存档备份，存于） | Everson, Michael; West, Andrew, , 2019-06-10  |
| 14.0 | U+1ACB..1ACE | 4 | L2/20-268 | N5145 （页面存档备份，存于） | Everson, Michael; West, Andrew, , 2020-10-05  |
| 14.0 | U+1ACB..1ACE | 4 | L2/21-016R |  | Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Moore, Lisa; Liang, Hai, , , 2021-01-14  |
| 14.0 | U+1ACB..1ACE | 4 | L2/21-009 |  | Moore, Lisa, , , 2021-01-27  |
| 14.0 | U+1ACB..1ACE | 4 | L2/21-069R |  | Scherer, Markus; Davis, Mark; Freytag, Asmus; Chapman, Christopher; Whistler, Ken; Constable, Peter, , , 2021-04-26  |
| 14.0 | U+1ACB..1ACE | 4 | L2/21-066 |  | Moore, Lisa, , , 2021-05-05, For Unicode version 14.0, reassign six code points U+1AC9..1ACE as noted in L2/21-069 item PRI428a.  |
 ↑  提案中建議的碼位及名稱可能與最終結果不同。