I just found out that when you disable a UDF it does not actually hide the data that is already entered from view.  There is only one option to hide that UDF data and that is to delete it.  It would be nice to have the option to hide the data from view without deleting it.  Reason:  there is a lot of information and one might want to minimize what they see in the UDF or potentially a UDF that is not longer in use but you don't want to delete the info.