What is required to be IRI compliant?

[Stephane Bortzmeyer]

On Mon, Dec 28, 2020 at 12:12:57PM +0000,
 William Orr <will at worrbase.com> wrote 
 a message of 129 lines which said:

> There are different types of normalization, but imo the only kind
> that server authors should care about is NFC,

And also because there is an Internet standard about Unicode network
format and it mandates NFC. RFC 5198
<gemini://gemini.bortzmeyer.org/rfc-mirror/rfc5198.txt>