This video uses an example playground and describes the playground environment.
The video demonstrates the lower-left run button: Click and hold and show “Automatically Run" and “Manually Run." It also demonstrates the lower-right show/hide debug area.
Shows the right column output. Student files for practice labs can be found here: https://www.dropbox.com/s/a15pytzin7cf1ks/StudentFilesiOSSwift.zip?dl=0
