Avoid showing some part of a nested page

I want to share a common index between all the pages in a wiki, the best is to create a index page and nest it in any other page.

the home page has the three most iportant pages nested in it and those could have also nested pages on them. the problem is the index duplicates every time I want to nest a page.
I would suggest that we can mark which parts of the page are hidden when this page is nested in another. something like:

[(^inested page to hide)]

could be helpful or just a similar markup as the ignore markup but that only afects when the page is nested

[(
all the content to hide when nested
)]

thanks,

Gonzo