Function set_enter_msg:
Defined in module m_exit (file: /std/modules/m_exit.c)

Set the enter message of a given exit.
This message will be displayed in the destination room.
The message can be a fucntion pointer or a string.
If multiple messages are passed, a random one will be selected when invoked

Prototype:
void set_enter_msg(string direction, mixed array message...);
