example:

example: URL scheme

[1] draft-ietf-iri-4395bis-irireg-03 - Guidelines and Registration Procedures for New URI/IRI Schemes ( ( 版)) <http://tools.ietf.org/html/draft-ietf-iri-4395bis-irireg-03>

[2] RFC 7595 - Guidelines and Registration Procedures for URI Schemes ( 版) <https://tools.ietf.org/html/rfc7595#section-8>