Where do I find +button in source code?

[unreliable]

Hello,

I'm writing a mod and I wanted to add the grapple I love from JA+ into it.  I'm wondering where within the source code I can find +button12 assignment and more specifically how the game interprets +button12 since it seems to work differently than a regular command. I think I can make the vector stuff work.

Thanks!

[Aldro Koon]

Well you're not gonna find that in the source code since it's from JA+ and JA+ isn't open source, or am I misunderstanding your question?

[unreliable]

Maybe, I'm certain +button1-15 exists in the source as assignable commands, so I was wondering where I can read the assignment of them in source code. Like where +jump, +forward are written and where they're assigned.  I know the grapple isn't in the source, I'll have to write it into the game.