IB Palettes?

FROM : Rick Mann
DATE : Thu Nov 22 20:25:54 2007

I'm reading the NSView docs, and I got to the section on using IB. It 
says, "If you have not created an Interface Builder palette for your 
custom view, there are two techniques you can use to create instances 
of your subclass within Interface Builder."

Where do I learn how to do this?

TIA,
Rick