What language it used?

Hello i have a question about the native files like b3d,csv and animated.
What language it used for csv,b3d and animated ? Is html,js,plain text, c or other language ?
Because i want to make snippet for that files.
I will make the snippet for VScode just for now, using my phone for make the code and online version of vscode for testing the snippet(if it works).
I think i gonna store the code on github so you can copy and test it yourself(after the code completed).

Generally all is plain test, happy new year!

Plain text is correct, but it's a little more complex than that.
(You need to delve way back into history....)

Both B3D and CSV are actually internal Direct3D Retained Mode textual export formats, although off the top of my head I'm not aware of anything else that actually uses them.

All other files are essentially custom Key Value Pair textual formats, which were probably derived from the standard Windows CFG of the time.
They're closest to TOML (and you might even be able to make a TOML highlighter work with them), but are case insensitive and have various quirks.