From the NannyMUD documentation

LAST CHANGE

2000-12-18

COMMAND

NAME
        owner - locate players who possess an item


SYNTAX
        owner [-h] [-?] [-dfnsvw] [-l min] [-u max] [-c who] [item]

DESCRIPTION
        The command will show you whom of the user has a named 'item'. There
	are several flags to go with this command.
         -?, -h : This help.
         -d     : Deep, look also in users bags etc.
         -f     : Show filename() of objects rather than creator().
         -n     : Show query_name() rather than short().
         -s     : Sort the list after levels before processing.
         -v     : Also show the value of the item.
         -w     : Also show the weight of the item.
 
	 -l lvl : check players with level of this and above.
	 -u lvl : check players with level of this and below.

	 -c who : show all object created by the wizard 'who'.
		  If you specified 'item', only objects with that
		  id created by 'whom' will be shown.