Usage: parry <player name>
-or-
       parry <monster> <x>
  
The parry command is useful when attacking monsters that are higher level
than you are. It is a defensive attack. When parrying, you only do 1/2 of
your normal damage. However, you greatly reduce the chance of being hit in
return.

Also, if you are hit, you are only hit for 1/2 of the normal damage that
your aggressor would normally do to you. Parrying has no fatigue cost and 
temporarily adds 10 to your armor class.

The following will cause your protected status (from the parry) to be
cancelled:

1. When you leave the room
2. When you perform an attack
3. When you are attacked
4. When there are no monsters in your current location that you are
   fighting (or have fought)
