+fight

Starts combat.
Usage:
+fight <character to attack>[,<another character to attack>, etc]
+fight

+fight will cause you to enter combat with the list of characters
you supply, or with no arguments will enter a fight that is already
present in the room if one exists. While in combat, a number of combat-
specific commands will be made available to you. Combat continues
while two or more characters are active combatants.

To end combat, use +end_combat.