version 12/091223 by David Fisher
Section: The Main Object
An object is automatically set whenever a message is displayed called "the main object".
It's value is usually the same as "the noun", but it may take other values, depending
on the message. For example:
set LibMsg <cannot go that way> to "There is no way [main object] from here."
In this case, the main object is a direction like "south" or "northwest".