Help for LIST:

LIST shows registered users that match the given criteria.
Multiple criteria may be used in the same command.

Current criteria are:
PATTERN       - All users that match a given pattern.
EMAIL         - All accounts registered with an email address
                that matches a given pattern.
#if module nickserv/mark
MARK-REASON   - All accounts whose mark reason matches a
                given pattern.
#endif
#if module nickserv/freeze
FROZEN-REASON - All frozen accounts whose freeze reason matches
                a given pattern.
#endif
#if module nickserv/restrict
RESTRICTED-REASON - All restricted accounts whose restrict reason matches
                a given pattern.
#endif
#if module nickserv/hold
HOLD          - All users with the HOLD flag set.
#endif
#if module nickserv/set_noop
NOOP          - All users with the NOOP flag set.
#endif
#if module nickserv/set_neverop
NEVEROP       - All users with the NEVEROP flag set.
#endif
WAITAUTH      - All users with the WAITAUTH flag set.
#if module nickserv/set_hidemail
HIDEMAIL      - All users with the HIDEMAIL flag set.
#endif
#if module nickserv/set_nomemo
NOMEMO        - All users with the NOMEMO flag set.
#endif
#if module nickserv/set_emailmemos
EMAILMEMOS    - All users with the EMAILMEMOS flag set.
#endif
#if module nickserv/set_privmsg
USE-PRIVMSG   - All users with the USEPRIVMSG flag set.
#endif
#if module nickserv/set_quietchg
QUIETCHG      - All users with the QUIETCHG flag set.
#endif
#if module nickserv/set_nogreet
NOGREET       - All users with the NOGREET flag set.
#endif
#if module nickserv/set_private
PRIVATE       - All users with the PRIVATE flag set.
#endif
#if module nickserv/set_nopassword
NOPASSWORD    - All users with the NOPASSWORD flag set.
#endif
#if module nickserv/regnolimit
REGNOLIMIT    - All users with the REGNOLIMIT flag set.
#endif

#if module nickserv/freeze
FROZEN        - All users frozen by network staff.
#endif
#if module nickserv/mark
MARKED        - All users marked by network staff.
#endif
#if module nickserv/restrict
RESTRICTED    - All users restricted by network staff.
#endif
#if module nickserv/vacation
VACATION      - All users marked as being on vacation.
#endif
REGISTERED    - User accounts registered longer ago than a given age.
LASTLOGIN     - User accounts last used longer ago than a given age.

Syntax: LIST <criteria>

Examples:
    /msg &nick& LIST pattern foo*
    /msg &nick& LIST hold
    /msg &nick& LIST frozen pattern x*
    /msg &nick& LIST registered 30d
    /msg &nick& LIST marked registered 7d pattern bar
    /msg &nick& LIST email *@gmail.com
    /msg &nick& LIST mark-reason *lamer*
