Yes. What we were talking about is whether, at the time that you
create the Mobi book, you have the TOC as a part of the main book file (as I do), or whether you prefer to have it as a separate file. Whichever way you do it, it ends up "within" the MobiPocket book - with Mobi there's no concept of an "external" TOC as there is on the Sony.
Different terminology for different devices
.