The hesiod class is for an information service from MIT's Project Athena. It is used to share information about various systems databases, such as users, groups, printers and so on. More information can be found at MIT . The keyword hs is a synonym for hesiod . It is still sometimes seen on LISP stations and other hardware in the AI community, and zone data for it can be specified with the chaos class.
Options check-names See Name Checking .
The default is to deny updates from all hosts. This address must appear in the remote end's allow-transfer option for this zone if one is specified. See the description of dialup in the Boolean Options section. See the description of notify in the Boolean Options section. The default is the empty list.