UMove the entire speedbar display up one directory.
IDisplay information in the minibuffer about this line. This is the same information shown when navigating with n and p, or moving the mouse over an item.
BByte compile the Emacs Lisp file on this line.
LLoad the Emacs Lisp file on this line. If a .elc file exists, optionally load that.
CCopy the current file to some other location.
RRename the current file, possibly moving it to some other location.
DDelete the current file.
ODelete the current file’s object file. Use the symbols ‘#’ and ‘!’ to determine if there is an object file available.