1 1.0 is normal speed, 0 is stopped, numbers between 0 and 1.0 are slower playback, negative numbers are rewind and numbers higher than 1.0 are faster playback.  The forward and backward buttons to the right of Play speed are for moving videos frame by frame.
Slow Food Movement. An international movement begun by Carlo Petrini with a forerunner organisation, Arcigola, founded in 1986 to resist the opening of a McDonald's (fast food restaurant) near the Spanish Steps in Rome.
These kinds of controls help you get the most nutrients out of your foods. Yet, the foods remnants must keep moving through the small intestine to avoid a traffic jam. Food is propelled through the small intestine by peristalsis, which is a wavelike series of muscular contractions. You might recall that peristalsis is also how food moves through the esophagus as it travels from the throat to the stomach. During peristalsis, the longitudinal muscles within the small intestine wall contract, and then the circular muscles contract, pushing the food down the tract.