From the NannyMUD documentation

LAST CHANGE

2000-12-12

COMMAND

NAME
        changep - 


SYNTAX
	changep [-D]  

DESCRIPTION
	This enables you to change the type or add more valid types to your
	property and is part of the property module.
	The option -D enables you to change the description of a property
	after it is added to the database.
	NOTE! You can only change properties that you have added to the
	      database. (Administrators can change all properties)


EXAMPLE
	'changep your_property Rooms Livings Monsters' or
	'changep -D your_property'