Function action:
Defined in module m_messages (file: /std/modules/m_messages.c)

Make the messages for a given group of people involved.  The return
value will have one array per person, as well as one for anyone else.
inform() can be used to send these messages to the right people.
see: inform

Prototype:
varargs string *action(object *who, mixed msg, array obs...);
