Try to read the code and understand how it works and you will find it very challenging to interpret. But not just that even the documentation is very sparse and hard to read. Compare that to the open-ai code, is so coincise and easy to read. There is mastery in doing that, deep mastery. Few repositories on tensorflow or pytorch organization get to that level.
Honestly the library doesn't seem that hard to understand, although it can be under documented at times - I found looking through the source very helpful.
