I just noticed that, in my first posting, I'd typed in "ISO(less than bracket)space(greater than bracket)9660" but the system doesn't recognize those signs literally. So: "ISO{space}9660". I'll have to always preview postings from now on.
Here's one for you (found in v10.1.2):
go to Mac Help and do a search for "ISO<space>9660" - there should only be one reference located.
Now you know all there is about "ISO 6990" [sic].
...I just thought it was funny. Has anyone else found misspellings?