Translations:Mutt/13/en

Last but not least, there is the  USE flag. It enables an extension to Mutt that can show a navigation pane of available mailboxes on the left hand side of the screen. While this is not a recommended feature for absolute newcomers (it is nowhere mentioned in any official docs, since it simply isn't official), more experienced users might like its functionality. Luckily, just enabling the USE flag doesn't make it visible at all, meaning you don't even notice it's enabled.