How can you tell which year it is?
I looked at the file dates, but they are all invalid since they are all dated February 1992. Oh well, beats 1970 I guess.
Edit: That "aud" string is from the face of the coverdisk. If you look in HOL at the disk shot, you will also see that the disk also has a 1997 date on it!
Edit 2: The disk shot in HOL has the code "aud304312c" so I guess it is a later version than our aud304312a and aud304312b...
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