[kh99]

I think I understand what you mean. Unfortunately, I don't believe such a thing exists. You can search the articles and search the forums here, and you can look for mods that already exist and see how they work. When I answer questions here I often read the vbulletin source code to figure things out. I know that's a lot of work, but I'm not sure what else to tell you.

I think there's a common misconception among beginner mod developers (at least I know it's one I had) that there should be some kind of api to do the things you'd want to do, but in fact there isn't. There are "hooks" at certain strategic locations where you can insert php code, but what you can do at a given hook location is not well-defined, it just depends on where in the vbulletin code they decided to put a hook.

I hope that makes sense, I guess English is not your first language so I hope it survives translation.