> are there any known predecessors of IFF's "chunked-sequential" file-format? https://www.martinreddy.net/gfx/2d/IFF.txt https://www.martinreddy.net/gfx/2d/IFF

> are there any known predecessors of IFF's "chunked-sequential" file-format? https://www.martinreddy.net/gfx/2d/IFF.txt https://www.martinreddy.net/gfx/2d/IFF.txt “Previous Work” sez — “Our basic need to move data between independently developed programs is similar to that addressed by the Apple Macintosh desk scrap or "clipboard" [Inside Macintosh chapter "Scrap Manager"].” “Macintosh uses a simple and elegant scheme of 4-character "identifiers" to identify resource types, clipboard format types, file types, and file creator programs. […] We'll honor Apple's designers by adopting this scheme.” “We may also borrow some Macintosh IDs and data formats.” And some other mentions too, like Postscript and