However there are several limitations. You may not remove my copyright from the source code I wrote. You may not pretend that you wrote this software. Even the library is free, you may register and support further development of the library.
Registered users have higher priority for obtaining support.
Also note, that library is based on several external libraries that have their own licenses. Their conditions are quite close to the presented above however you should read them if you use them. All Rights Reserved except as specified below. These conditions apply to any software derived from or based on the library code, not just to the unmodified library. If you use my work, you ought to acknowledge me.