Grouping additional MetaNames into swishdefault

Hi,

I have some HTML files indexed.  Is there a way to add a MetaName to 
swishdefault, while retaining that MetaName's own separate Rank?  For 
example, if I have the following MetaNames and MetaNamesRanks defined in 
swish.cfg:

MetaNames keywords
MetaNamesRank 5 keywords
MetaNamesRank 0 swishdefault

I'd like users of our site's CGI web search frontend to be able to 
search for "blah" in keywords without having to specify "keywords=blah". 
  Is it possible to tweak my swish-e configuration to allow this, or 
will I have to add some query parsing on the CGI end?  I've RTM'd, but I 
could have missed something obvious.

Thanks,
-mes