The tristate results from comparing a username with the admin or whitelist/elevated/operator/staff lists.
The user is not allowed to trigger this function.
The user is allowed to trigger this function.
We don't know enough to say whether the user is allowed to trigger this function, so do a WHOIS query and act based on the results.
See Implementation
The tristate results from comparing a username with the admin or whitelist/elevated/operator/staff lists.