9.8 Management <Alt-F9>

     The management function is used to perform global operations on a
     range of messages such as moving, printing, copying, deleting,
     etc.

     When you press <Alt-F9> for the first time in a folder, FM will
     scan all the messages in the folder and build a list of them.
     That list is kept in memory until you press <Alt-F9> in another
     folder, or when FM, for some reason, has to rebuild its internal
     message list for a folder. If you remove, add or renumber
     messages the list will be updated accordingly, so no rescan is
     necessary.