(ARC) b
 (DIR) tutorial
 (ARC) b
 (TXT) exref.ps
 (ARC) d
 (TXT) joy84.txt
 (ARC) d
 (???) paper.pdf
 (ARC) f
 (TXT) summary.ps
 (ARC) d
 (TXT) vi.ref.ps
 (ARC) f
 (TXT) vi.ref.txt
 (ERR)