Part 11 - UIView's Clear Graphics Context

• "Graphics Context" is defined by Apple as: "A graphics context represents a drawing destination."
• "Context" is like scope. In this case it is the bounds of the object.
• If true, clears what is drawn and redraws the view. Prevents visual artifacts from persisting after redrawing.
• Property is clearsContextBeforeDrawing in code.
• If unchecked you are responsible for redrawing.