I would say an excel spreadsheet :) The way a PE file is defined is interesting. They managed to cram a completely different file format into the DOS 'MZ' for

I would say an excel spreadsheet :) The way a PE file is defined is interesting. They managed to cram a completely different file format into the DOS 'MZ' format. Including the NE and LE formats. I think the NE one had a bunch of sub targets (OS/2, win32s, etc). https://wiki.osdev.org/PE https://wiki.osdev.org/PE https://wiki.osdev.org/NE https://wiki.osdev.org/NE It is quite the nesting doll of executable formats. If I remember correctly PE also holds .NET in some way as another sub format.