I went to the Wordpress forum first (at wordpress.org)... the exact question has been asked many times before... so far, no solution. They are "post/blog-centric". I am asking here on the SitePoint forum because that's where to go for results IMHO
The kicker is that I am using WP as a "blog free" CMS pages only solution. Roles and Capabilities shows that the "author" role can edit posts only (not pages). I agree, it must be possible... it would be a great feature. I am hoping that I can find the way to do it. Wordpress is fantastic and this would make it top of the pile!
The default Wordpress package does not allow authors to edit pages, only posts (admins and editors can edit pages but they can also delete other's pages ) .