I mean most microwaves I use have a scale of 1-10 for power that changes how long it pulses for. For heating up leftovers with different densities it can be really handy, or anything that’s like multiple different types of food. Full plates of thanksgiving leftovers or Chinese food come to mind. Instead of ending up with some things being molten and some being cold in the center, chuck that baby on for 60-70% power and it really helps to distribute the heat more evenly.