This object may be used to unset attributes, effectively disabling the feature for which the attribute is used. When this object is set, the indiciated configuration items will be unset which may disable the feature which uses the specified configuration attribute. Such changes will automatically apply to all PM instances associated with the specified interval profile. This object may only be set on an existing row. Attempts to include this object during a row creation will be rejected. This object will always return all bits zero. Each named bit in this object corresponds to the row object in this table representing the same configuration attribute.