mh-e: Speedbar

 
 12 The Speedbar
 ***************
 
 You can also use the speedbar (SeeSpeedbar Frames (emacs)Speedbar,)
 to view your folders.  To bring up the speedbar, run ‘M-x speedbar
 <RET>’.  You will see a new frame appear with all of your MH folders.
 Folders with unseen messages appear in boldface.  Click on a folder name
 with ‘mouse-2’ to visit that folder in a similar fashion to the command
 ‘F v’ (‘mh-visit-folder’) (SeeFolders).  Click on the ‘+’ icon to
 expand and view the sub-folders of that folder.
 
    The speedbar can be manipulated with the keyboard as well.  Use the
 Emacs navigational keys (like the arrow keys, or ‘C-n’) to move the
 cursor over the desired folder and then use the shortcuts for the menu
 items listed in the table below.
 
 ‘Visit Folder (<RET>)’
      Visits the selected folder just as if you had used ‘F v’
      (‘mh-speed-view’).
 ‘Expand Nested Folders (‘+’)’
      Expands the selected folder in the speedbar, exposing the children
      folders inside it (‘mh-speed-expand-folder’).
 ‘Contract Nested Folders (‘-’)’
      Contracts or collapses the selected folder in the speedbar, hiding
      the children folders inside it (‘mh-speed-contract-folder’).
 ‘Refresh Speedbar (‘r’)’
      Regenerates the list of folders in the speedbar.  Run this command
      if you’ve added or deleted a folder, or want to update the unseen
      message count before the next automatic update
      (‘mh-speed-refresh’).
 
    You can click on ‘mouse-3’ to bring up a context menu that contains
 these items.  Dismiss the speedbar with ‘C-x 5 0’ (‘delete-frame’).
 
    The MH-E speedbar uses the MH command ‘flists’(1) to generate the
 list of folders.  The ‘mh-speedbar’ customization group contains the
 following option which controls how often the speedbar calls ‘flists’.
 
 ‘mh-speed-update-interval’
      Time between speedbar updates in seconds (default: 60).  Set to 0
      to disable automatic update.
 
    You can modify the appearance of the folders in the speedbar by
 customizing the following faces.
 
 ‘mh-speedbar-folder’
      Basic folder face.
 ‘mh-speedbar-folder-with-unseen-messages’
      Folder face when folder contains unread messages.
 ‘mh-speedbar-selected-folder’
      Selected folder face.
 ‘mh-speedbar-selected-folder-with-unseen-messages’
      Selected folder face when folder contains unread messages.
 
    ---------- Footnotes ----------
 
    (1) See the section Searching for Sequences with flist
 (http://rand-mh.sourceforge.net/book/mh/morseq.html#flist) in the MH
 book.