Combining Diacritical Marks for Symbols is a Unicode block containing arrows, dots, enclosures, and overlays for modifying symbol characters.
Its block name in Unicode 1.0 was simply Diacritical Marks for Symbols.
Block
History The following Unicode-related documents record the purpose and process of defining specific characters in the Combining Diacritical Marks for Symbols block:
Version Count L2 ID WG2 ID Document 1.0.0 U+20D0..20E1 18 (to be determined) 3.0 U+20E2..20E3 2 N1668 N1703 N1905 html, doc) 3.2 U+20E4 1 N1941 N1975 doc) N2003 U+20E5..20E8 4 N2191R txt) U+20E9..20EA 2 html, doc) N2336 N2356 doc) 4.1 U+20EB 1 N2590 doc) 5.0 U+20EC..20EF 4 5.1 U+20F0 1 N3198R doc)
References