As for the Poser format, almost everything known about it outside the owning company at the time has come from the community, hacking the code and seeing what does what. It was the community that developed MAT poses, morph injection, ERC (including Joint Controlled Morphs and Easypose), and a host of other features peole take for granted nowadays.

NOT the company 'generously letting people know about it'.

Remember, kids! Napalm is Nature's Toothpaste!