Initialization Params for Controlled Types

[aalvarez@maja (Angel Alvarez)]

Given that Initialization for Controlled types only takes a single
parameter, the Object to initialize, how can one actually pass 
at run-time other data to help initialize the object in one way or
another? ... Passing them as record fields of the object itself?

It is unclear to me how this could be done for Controlled objects  
(by means of default field initialization for the record type itself?) 
and at any rate it seems like this solution might introduce "excess baggage" 
for the whole life of the object, just to have on hand the data 
required at initialization time ... Will anybody please like to comment?

Thank you for your help,
Angel Alvarez