When do i use for your information in sentence?

Q: When do I use "For your information..." in [a] sentence? A: When you wish to belittle your counterpart's position of authority.

A2: When you wish to establish an air of superiority and "talk down" to your adversary.

A3: When you are certain - beyond reproach - that you have irrefutable information (relevant to the topic of discourse) which your counterpart is lacking.