I've had this washer for a month, but cannot find explanations for the various cycles. Specifically, I'd like to know about the speed wash. Does it just wash the clothes faster and is it only used for lightly worn clothing? There are lots of descriptions on how to sort the laundry, and the clothing label instructions, but not about the cycles themselves! It took me a few washes to figure out how to change the temp of the water, speed of the spin and and how to do "spin" only!