What Objective C preprocessor / Compiler / Iphone SDK do behind the scene?
<p>I do see tutorials like this one
<a href="http://www.youtube.com/watch?v=8X-vDtEwpeo" rel="nofollow">http://www.youtube.com/watch?v=8X-vDtEwpeo</a></p>

<p>They're good but they just describe the recipe so I still don't understand the logics what's happening behind the scene:</p>

<p>What Objective C preprocessor / Compiler / Iphone SDK do when one drag from Interface Builder to Fileowner. Why this name "file owner" ?</p>
