[andrybak]

> We have used IPGs to specify a number of file formats including ZIP, ELF, GIF, PE, and part of PDF

For PDF, that's fair. Video "Types of PDF - Computerphile" covers this: https://www.youtube.com/watch?v=K7oxZCgO1dY

[jgalt212]

I"ll watch any and all Professor Brailsford videos.