t requires one or more specific methods for decoding the bitstream and for presenting 
it for use over time. The bitstream can be altered, as a result of conversion, for example, as long 
as it continues to be able to fulfil its original role in the reproduction of the record. All digital 
components must be able to work together after they are altered; therefore, all changes need to 
be assessed by the preserver for the effects they may have on the record.  
The preserver must be prepared to advise the cre