folder commands, 3 pane navigation, tags
most of the above is working.
Suggestions: after doing one, TB looses orientation where the next suggestion should be displayed. Workaround: switch tabs.
Seems to be a tricky one, not easily found why TB looses the saved location for the message.
3pane navigation: esc-m (into message) has a quirk. To get it running for all further messages, the mouse must once click into the message pane. Without, messengeBrowser cannot focus into the message.