Let's say (for the sake of argument) you wanted to have some divisions and you didn't want a big blank page saying "Part 2", but you wanted "Part 2" in the toc.ncx.
Please correct me on the following:
You want text, so give it your navLabel text.
You can't have a navPoint without content, so set the content to the next occuring viable content (which could be multiple levels down).
You can't have a navPoint without an id, so, alright give it something.
You (apparently?) can have a navPoint
without a playOrder, so leave that out.
Code:
<navPoint id="p2">
<navLabel><text>Part 2</text></navLabel>
<content src="chapter20.htm"/>
<navPoint id="np021" playOrder="21">
<navLabel><text>Chapter 20</text></navLabel>
<content src="chapter20.htm"/>
</navPoint>
I see that RMSDK accepts navPoints without content and gives them a getChapterPagePositionFromIndex of -1.
Edit: I guess that you could just have a big stupid blank "Part 2" page and just leave it out of the spine.