PE is generally easy to use, but at times it would be nice to have some documentation. The intro video as linked on the PE page is for an old version of CW. Google yielded ProcessorExportHelp.pdf, a document that has no revision number or date on it. There are no doc links on the PE web page at freescale.com.
While I have not performed an exhaustive search yet, at the moment it appears there has been a minor oversight, that is, Freescale has not provided proper documentation for PE.
So what's the best source for information about how to use PE components circa CW 10.4?