1. add comment with text "comment1" on home page (can be any other page).
to the body of home page.
3. Each comment is represented as page in rwiki, so comment1 will be listed in the index with name something link home.000 or home.001...
4. Say it is named as home.000, click on this link in index, in the comment page, remove the permission rwiki.read from INFO and save it.
5. Now if we try to click the link home.000 again, a Permission Denied message is displayed. However the text "comment1" is still visible in home page in the comment section.