Can someone please explain the following stages of fire:

Question

1.Incipient Phase

2. Rollover

3. Steady Burning Phase

4. Flashover

5. Hot-Smoldering Phase

6. Backdraft

These sites explain the stages of fire.

http://sageauthoring.com/fdny/ft&p/ftpeng04.pdf

http://www.maiif.net/pdf/fire_chapter1.pdf

http://web.jjay.cuny.edu/~tflan/documents/101docs/FIS101FireBehavior.pdf