Automated Comments?

[Mark]

I saw this in the key from Microsoft and was wondering how the was done.
Was it automated and done at the time of creation or ??

Thanks

-----BEGIN PGP PUBLIC KEY BLOCK-----
Comment: User-ID:    Microsoft Security Notifications
Comment: Created:    10/26/2020 9:54 PM
Comment: Expires:    10/29/2021 12:00 PM
Comment: Type:    2048-bit RSA (secret key available)
Comment: Usage:    Signing, Encryption, Certifying User-IDs
Comment: Fingerprint:    8348AC727723993DB6271A15B65DFC12C4E721B8