schema:             PERSON-SCHEMA
ref:                dn42.person
key:                person          required   single    schema
key:                nic-hdl         required   single    primary
key:                mnt-by          required   multiple  lookup=dn42.mntner
key:                org             optional   multiple  lookup=dn42.organisation
key:                nick            optional   multiple
key:                pgp-fingerprint optional   multiple
key:                www             optional   multiple
key:                e-mail          optional   multiple
key:                contact         optional   multiple
key:                abuse-mailbox   optional   multiple
key:                phone           optional   multiple
key:                fax-no          optional   multiple
key:                address         optional   multiple
key:                remarks         optional   multiple
key:                source          required   single    lookup=dn42.registry
mnt-by:             DN42-MNT
source:             DN42