Changes to Step #15

Edit by David Hodson

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Step #15 Lines

[* black] The plain-looking sheet of white paper serves as a uniform white background for the LCD's backlight.
[* black] What else would you use to light an LED-backlit display? LEDs, of course!
[* black] A strip of 48 LEDs at the bottom of the display assembly provideprovides all the light your Retina display needs.
[* black] A strip of 48 LEDs at the bottom of the display assembly provideprovides all the light your Retina display needs.