Do I have the right understanding of frames and bounds in UIKit?

Question

Let me try to explain it. Please tell me if I am wrong. I am just 70% sure about it.

Like I understand it, an UIView has a frame and an bounds rectangle. The job of

Answer 1

http://developer.apple.com/library/ios/#documentation/windowsviews/conceptual/viewpg_iphoneos/WindowsandViews/WindowsandViews.html

For iOS. Origin coordinate is in different location from Mac OS (upper left, not lower left)