Browse by code chart: PUA-9
Critical signs are used in printed editions, indicating corruptions, deletions, additions etc. Many of these signs are already in the Unicode Standard: • Basic Latin: asterisk, 002A (p. 15), square brackets, 005B and 005D (p. 19), curly brackets, 007B and 007D (p. 22), single vertical line, 007C (cf. p. 22). • General Punctuation: double vertical line, 2016 (p. 62). • Miscellaneous Mathematical Symbols-A: double square brackets, 27E6 and 27E7, and angle brackets, 27E8 and 27E9 (pp. 74). In v. 4.1 and 5.1 of the Unicode Standard, 14 characters in this subrange have been inluded in Supplemental Punctuation, and have therefore been decommis- sioned (highlighted in yellow).