i have a 99 honda prelude and i wanna know what does BB6 mean? anyone? please help?

[Young]

i heard many people said that bb6 is the 5th gen lude and h22 is the engine is that right? correct me if im wrong. i have a 5speed 99 honda prelude dohc vtec engine 2.2. and 200HP. and i really want to know whats BB6 mean? what is the different between bb2 though bb8 or whatever it is. can anyone help let me know??? thanks