3 cycle charge

I bought a TLP Expro ii charge.  

4 charge modes
1. Peak, - easy to understand!
2. Fuzzy logic - okay to understand!
3 discharge - undestand!
4. 3 cycle - But, What is 3 cycle mode for?  Please help.  Thank you.

                               
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3 cycle mode:
1. Discharging mode
2. 2 minutes of (slow) trickle mode
3. (Fast charging)
4. 2 minutes of (slow) trickle mode. (the above procedure cycels 3 times)
5. (slow) tickle charge mode & (bb)