$rfc822:dtext-char
[\u0000-\u000C\u000E-Z\u005E-\u007F]
[\x00-\x0C\x0E-Z\x5E-\x7F]
Test a string: Show
Compare with: Show
Complemetary
[Notes] [RFC822]
The set definition is contained in sets.json data file.
sets.json