UDL - Numbers customize

[Гурд Гурд]

https://ivan-radic.github.io/udl-documentation/numbers/

Making defining custom lang - vCard formating - I can’t make mumbers rules.

1. For string like CHARSET=UTF-8;ENCODING=QUOTED-PRINTABLE:=D0=9C=D0=BE=D0=BA=D1=80=D1=8B=D0=B9 =D0=9D=D0=BE=D1=81
   (assuming It’s similar to non-unicode ip addressing)
   With = suffixing - prefixing is not right…

2.1 The “Attributes” ( https://ru.wikipedia.org/wiki/VCard ) - are not operators:
they are only “Keywords”, aren’t they?
2.2 There are only real operators are: :, ; and =, aren’t there?
2.3 Should I highlight so called Parameters attributes in another color that main ones, what do you thing?

3. If I’ve done well shall I publish my this variant vCard formatting for others?

Thank You! (Excuse me for my English, and I’m in first time, with a vocabulary :) )

[Гурд Гурд]

Founded the official specification.
https://web.archive.org/web/20060101034747/http://www.imc.org/pdi/vcard-21.txt