Where can I find info about how STOS saves image files (ones created with its graphic utility)? Reason I'm asking is that I'm sick of builtin sprite editor and I've remembered just today that I've done graphic tool for another "oldschool" thing called Megazeux to edit graphics with as Megazeux's graphic editor was at the time at least even more crap. I could adapt this utility for making graphics for STOS. This would be a separate app so some purists may not like it and the program is very basic, only plotting pixels, but should be enough for most homebrew purposes.
The thing I need to know however is what is binary format of sprited-saved graphics is (what is saved where and how, whether there is some header info I need to adhere to so STOS will load it properly, etc.) so I can adapt save/load routines appropriately.