expected simplesect behavior

I notice that 
simplesects are not chunks and so can be a way to let the writer put subsections 
in an individual chunk/topic. Before we start using them like this, I want to 
make sure I'm not relying on a bug. Is it intentional that simplesects are not 
chunks? 

 

One other thing I've 
noticed: setting simplesect.in.toc to 1 doesn't add simplesects to the toc pane 
in html help/eclipse or to the bookmarks pane in pdf. Should the *.in.toc type 
parameters affect these toc panes too? Or should simplesect just appear in the 
toc panes by default? 

 

Thanks,

David