From the NannyMUD documentation

LAST CHANGE

2000-12-11

FUNCTION

NAME
        shout - Broadcast a string to all players


SYNTAX
        string shout(string str)

DESCRIPTION
        Send a string "str" to all players. 


RETURN VALUES
        The argument string is returned by shout().


NOTE
        Be very, very careful with this function, since it will really send
        the string to all players, without any form of earmuf/editing mode 
        checks, etc, and can easily annoy people.


SEE ALSO
        write in efun/object_related/write


SEE ALSO
        tell_object in efun/object_related/tell_object


SEE ALSO
        say in sfun/say