Thread:Feedback/"Mark as read" buttons

The "mark as read" buttons could do with some rearranging.


 * 1) At present (on Special:NewMessages) they appear next to a lengthy thread, so it's not clear what will be marked as "read" - the entire thread? the specific posts it's next to?
 * 2) Users may want a mark as unread option too (suppose they click in error?)
 * 3) No way to mark a post as read on the usual view, from what I can see - only on the Special page.

Suggestion - every post has next to it, whatever page it's viewed on, 2 icons:
 * Mark this post as read/unread (depending on its current state)
 * Mark the entire thread it's part of as read/unread