Capital L lists all un-subscribed groups that slrn knows about.
     Slrn gets this information through one of three sources.  It
     tries the following in order and stops when one is successful:

	a.  From the server via the active file.  It only does this if the
	    line `set read_active 1' is in your .slrnrc file.  By default,
	    slrn does not read the active file.
	    
	b.  By querying the server using the XGTITLE nntp command.  This
	    requires your server to support this command and the line
	    `set use_xgtitle 1' must be in your .slrnrc file.
	    
        c.  From the groups listed in your newsrc file.  The `L' command
	    will only list unsubscribed groups that are present in this file.

     The last one (c) always succeeds with results that may be less than
     desirable.  If you have a fast network connection to your server,
     simply put
     
         set read_active 1

     in your .slrnrc file.  If your connection is slow via something like
     ppp and you do not want slrn to read the active file, then see whether
     or not your server supports XGTITLE command.  If it does, allow slrn to
     use it via

         set use_xgtitle 1
	 
     As a last resort, try to keep a full list of newsgroups in your newsrc
     file.

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