From the NannyMUD documentation

LAST CHANGE

2003-02-23

NAME

        dangers - Handling of danger classes.

LOCATION

        The 'dangers' module.

DESCRIPTION

        This module provides the functionality to manipulate danger
        classes. Danger classes replaces danger levels, with a system
        which has more fine-grained control. The following classes are
        used:

        Class        Protect
        autoloader   Autoloaders.
        castle       Wizard castles.
        clubmark     Clubmarks.
        door         Doors.
        equipment    Worn and wielded objects.
        guildmark    Guildmarks.
        invisible    Invisible objects.
        interactive  Players.
        linkdead     Linkdead players.
        living       Players and monsters.
        not_mine     Objects created by others.
        owner        Objects made by you.
        property_no  Objects with the property 'no'.
        room_area    Room objects in /room dir and subdirs.
        soul         The soul.
        tool         Mailreaders, and wiztools.
        wizmod       The wizmod.
        other        Anything not covered in other classes. This
                     essentially disables destructs.

NOTE

        The classes are listed in /include/dangerclass.h

COMMAND

NAME
        danger - The danger class manipulation command.


SYNTAX
        danger
        danger help
        danger default
        danger add 
        danger sub 
        danger show
        danger list
        danger use

DESCRIPTION
        This command is used to manipulate the danger classes. Without
        any argument, it shows a short help text.

        The recognised arguments are:
        help     Show the help text.
        default  Install convenient defaults.
        add      Add a class to the list of protected classes.
        sub      Remove a class from the list.
        show     Show what is on the list.
        list     As 'show'.
        use      Toggle the use of danger classes.