21 Sep 15 09:45, you wrote to me:

 HG>> Have you confirmed that PKUNZIP or Infozips UNZIP cannot handle 7-ZIP
 HG>> compressed files?

 ml>> 7-zip defaults to its 7z format... pkunzip can't recognize it
 ml>> because the signature "7Z" is different than "PK"...

 HG> Thanks for the info. Of course I have noticed the first two characters
 HG> of ZIP-files but I can't recall having seen PK up there in the top left
 HG> corner. "MZ" plus an additional character seem to be common in both
 HG> normal and PKLited files.

yes, MZ indicates one of the binary executable formats... there are
several... PE is another one, IIRC... i think it indicates a type of
windows executable... here's a link to a page with a lot of file signatures
and their offsets...

  https://en.wikipedia.org/wiki/List_of_file_signatures

)\/(ark

... Obscenity is whatever gives the judge an erection.
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