At 21:40 07/03/2002 Wednesday, Michael Fay wrote:
 >But alas, the QUERY documentation gives no clue has to how to filter a
 >list to show only members
 >subscribing to a given topic.

Q listname WITH TOPICS a FOR *@*

"a" can be one or more defined topics separated by commas.  If more than
one topic, an implicit Boolean AND is used in the filter.