I've just installed Role Editor. I wanted to make just one change: I wanted to allow authors to create pages and edit their own pages. I checked the Edit Pages option for the Author role. The result is that an author can now see the "Pages" link on the dashboard, and clicking that link displays a list of pages that author owns. But the Edit option for those pages does not appear - the View option is the only one they get.
I tried also checking the "Edit Others Pages" capability. What happens then is that the author can see ALL the pages from the dashboard, but still can't edit any of them.