zSlicer: ACID 6 has a chopper tool that allows you to split a clip based on quantize settings. So for instance in Podium this quantize setting could be set within the zSlicer. This would allow a user to drag along the clip and the selected area would snap based on the quantize settings set in the Zslicer.
An add to track option would also be helpful to copy the slice to the selected track. It would also be nice if the zSlicer could rearrange slices within a clip.
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