I use ACID Pro 11.
When I recording some guitar(or any instruments) before the main music start, I must set main music's start position to 2 measure or any measure for rush(especially guitars). Then I am difficult to count measures now recording or play.
If there are negative measures, I would never make 2 or any measures for only rush.
So please think this feature.
P.S. I hear about other DAWS built-in this feature.