Hidden Sampling Feature in MPC3

This is a feature I discovered in MPC 3.5. On the main screen, after pressing the Rec/Over Dub button, if you hit an empty pad in a drum track, it arms sampling, and sampling starts when external audio is input. If you press the pad during sampling, it stops the sampling, and if you press the Stop button, the sampling is canceled. You need to set the recording threshold in the Sampler screen beforehand. Sorry if this is already known.
https://imgur.com/a/sampling-directly-t ... pc-rYNeqMs

Pages 357-361 of MPC Bible 3