Help.. Remix ‘Q and R’ button?

Thanks..
I cannot find any info on these two buttons, I guess they were added later on..

But what do they do?
thanks

Such an amazing instrument..

Q is for Quantize. When enabled, tapping a new remix will not immediately take effect when a new one is selected, it waits for a certain quantized interval of time.

R is for reset of the playhead. When enabled, the playhead will reset to zero when a new remix is activated.

Thank you.. Good Stuff..