[Gunilla]

The post header consists of the following words (My translation from Swedish):

Redigera (Edit)
Sammanfoga (Merge)
Stäng (Close)
Klistra (som notis) Sticky
Lägg i papperskorg (Put in trash)
Skräpmeddelande (Spam)
Förkasta (Unapprove)
Svara (Answer)

What´s the difference between Close and Put in Trash and Unapprove?
What happens when I clock on Sticky?

[Gunilla]

I also want to know what´s the difference between keymaster and moderator.

[Robin W]

close – means the post still shows, but no-one can add to it
Trash – means put in trash, so the post is no longer shown
Unapprove – makes the topic pending – it is not seen in by users, only moderators and keymasters
sticky – puts the post above ordinary posts in the list – typically to have a topic always at the top

Keymaster – Can create, edit and delete other users’ forums, topics and replies. Can manage Tags, and moderate a forum with the moderation tools. Has access to global forum settings, tools, and importer.
Moderator – Can create and edit forums. Can create, edit and delete other users’ topics and replies. Can manage Tags, and moderate a forum with the moderation tools.

bbPress User Roles and Capabilities