13. rv.Fb Reverb Feedback
Specifies reverb feedback, impacting how long the "tail" of a sound will be.
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- Patterns / Pttn page (under Guides, tutorials and docs)However it is possible to modify this speed (see "b.div"/"BPM div" parameter on the "Pttn" page) on a per-pattern basis. 
- 16. Md.bL MIDI Patch bank LSB (under Patterns)
- 7. M.U.OF Mute unmute offset (under Patterns)
- 6. UM.Ln Unmute length (under Patterns)If 'Mu.Ln' + 'UM.Ln' does not the equal pattern length (Pt.Ln), interesting polymeters can eventuate. 
- Using a sample kit (under Using samples and kits in your songs)To quickly and conveniently create a sample kit patch out of a kit; In the sampler, select the kit you want to use ("US.01"-"US.16").