iOS Programming Vocabulary 5
class extensions – properties declared in m file, not h file. class extensions are not visible to other classes. properties in header file are visible to other classes.
The Run Loop and Redrawing Views – listens for events and finds appropriate handler methods
setNeedsDisplay – re-render the view
setNeedsDisplayInRect – mark only a portion of a view as needing to be redrawn
UIScrollView – supports panning and paging.