There are two things to be found here:
dmo-format.txt:
a document describing Forsaken's .dmo file
formatfskndemo.ax:
an Asterix program that parses Forsaken
.dmo (demo/recording) filesThese are also in a Git repository: git clone
https://pimgooss.home.xs4all.nl/src/fskndemo/.git
fskndemo
Or a tarball (source code, Makefile, and compiled fskndemo binary):
fskndemo-2024-03-21.tar.gz (16 kB)
Many more Forsaken-related materials (most of it made by other people) can be found at https://github.com/ForsakenX.