The following Unicode-related documents record the purpose and process of defining specific characters in the Symbols for Legacy Computing Supplement block:
Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Constable, Peter (2022-01-22), "17 Legacy Computing Symbols", Recommendations to UTC #170 January 2022 on Script Proposals
Constable, Peter (2023-02-01), "Consensus 174-C24", UTC #174 Minutes, The UTC accepts the name change for U+1CE35 from LARGE TYPE PIECE RAISED UPPER RIGHT ARC to LARGE TYPE PIECE RAISED UPPER LEFT ARC
Anderson, Deborah; Kučera, Jan; Whistler, Ken; Pournader, Roozbeh; Constable, Peter (2023-07-21), "13 Symbols for Legacy Computers Supplement", Recommendations to UTC #176 July 2023 on Script Proposals
Constable, Peter (2023-07-31), "Consensus 176-C37", UTC #176 Minutes, Change the name of U+1CE07 TOP RIGHT BLACK LEFT-POINTING SMALL TRIANGLE to TOP LEFT BLACK LEFT-POINTING SMALL TRIANGLE
Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Constable, Peter (2022-01-22), "20 Smalltalk", Recommendations to UTC #170 January 2022 on Script Proposals
Constable, Peter (2022-04-21), "Consensus 170-C17", UTC #170 Minutes, UTC accepts ... 5 Smalltalk symbols
^Proposed code points and characters names may differ from final code points and names
Implementation
The glyphs for the Symbols for Legacy Computing Supplement block have been added to the Cascadia Code (2404.03 release or later),[4]GNU Unifont (version 16.0.01 or higher)[5] and Iosevka[when?][6] fonts.