Using UUIDs

I am looking at using uuid_create() to generate UUIDs.  The SQL Reference 
Manual talks about the internal structure of the UUIDs generated but I am 
extremely unclear about whether the value actually returned can be parsed
as 
described.   I do know UUIDs come in different "versions", including
hashed 
and randomized.

What version is Ingres going to give me?   Is there any sensible 
interpretation of the output of uuid_to_char()?

Roy