WARNING!!! NSWindow Nib files

Question

WARNING!!!!
1) You cannot access a nib file programatically in any case!
2) You cannot create an NSWindow from within its NSWindowController!
3) You cannot 'show' an NSWindow from within an NSWindow (you must use an NSWindowController to 'show' an NSWindow)!
One of the biggest hindrances to learning the manuals is that there are so few warnings on what you cannot do.

Answer 1

Maybe different things are tricky for different people. The three points I listed would have saved me hours of frustration if I had known them before I started reading on views.
(The Interface Builder is awesome until you want to change something programatically, which there is usually no need to do. But I am on the side of making more technology available to the public, rather than the same or less. At some point, if everyone could easily change windows programatically, the design of the system might loose its consistency. So there is some real concern from the design side of things. At this point, people should be willing to adopt the Apple patterns for their windows through the strength of the branding, and not because the access to programatically designing them is limited. There may be some security issues as well, which is possible.)
I'm very satisfied with the fact that I can now launch windows in a number of application design patterns with complete control over their design, which is something that I need to do for this project but may never use again. And it was a little confusing to me, too, that some properties can be set only before a window is shown, and some after.