-<BLOCKQUOTE><CODE>
-<PRE>
-reject/spots 1 on hf/cw
-reject/spots 2 on 50000/1400000 not (by_zone 14,15,16 or call_zone 14,15,16)
-</PRE>
-</CODE></BLOCKQUOTE>
-<P>What this does is to ignore all HF CW spots and also rejects any spots on VHF
-which don't either originate or spot someone in Europe.
-<P>
-<P>This is an example where you would use a line number (1 and 2 in this case), if
-you leave the digit out, the system assumes '1'. Digits '0'-'9' are available.
-This make it easier to see just what filters you have set. It also makes it
-more simple to remove individual filters, during a contest for example.
-<P>
-<P>You will notice in the above example that the second line has brackets. Look
-at the line logically. You can see there are 2 separate sections to it. We
-are saying reject spots that are VHF or above <EM>APART</EM> from those in
-zones 14, 15 and 16 (either spotted there or originated there). If you did
-not have the brackets to separate the 2 sections, then Spider would read it
-logically from the front and see a different expression entirely ...
-<P>
-<BLOCKQUOTE><CODE>
-<PRE>
-(on 50000/1400000 and by_zone 14,15,16) or call_zone 14,15,16
-</PRE>
-</CODE></BLOCKQUOTE>
-<P>The simple way to remember this is, if you use OR - use brackets. Whilst we are
-here CASE is not important. 'And BY_Zone' is just the same as 'and by_zone'.
-<P>As mentioned earlier, setting several filters can be more flexible than
-simply setting one complex one. Doing it in this way means that if you want
-to alter your filter you can just redefine or remove one or more lines of it or
-one line. For example ...
-<P>
-<BLOCKQUOTE><CODE>
-<PRE>
-reject/spots 1 on hf/ssb
-</PRE>
-</CODE></BLOCKQUOTE>
-<P>would redefine our earlier example, or