What is whitelist and blacklist data?

Question

I was reading about development of XPCOM component. I came across these terms called whitelist data and blacklist data, I tried to find out on google but couldn\'t .. I do not

Answer 1

white list is a list where you can use it for further need in your application as the functionality proceeds and black list is one which you are not interested in entertaining as you further proceed forward in your application.