Hi! Holger,

On 21/09/2015 9:45 AM, you wrote to Mark Lewis:

 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.

That's for .EXE programs.  (FWIW, the "MZ" stands for Mark
Zbikowksi who was the principal architect of DOS.)  PK was part of the
company name PKware, of .ZIP fame.

Cheers,
Paul.

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