ending procmail execution when matching in a block

I have blocks like these in my mailing list catcher INCLUDERC;

:0:
* ^list-post:([^ ]*\/\<.*)
{
:0c
$LISTDIR/`echo $MATCH|sed -e 's/[@\.>].*//g' -e 's/.*[ <]//' -e
's/.*://'`
:0
* ? egrep -if  /home/eric/serialised_subjects
$DEFAULT
}

:0:
* ^Mailing-list:([^ ]*\/\<.*)@
{
...

When the mail matches the condition above the block, the block
commands are processed but the problem is that procmail does not 
exit at this point but continues to the next condition.

How could I change this behaviour?
-- 
Best regards,
Eric Smith
Mobile: 00 31 6 455 09313 - Tel Wageningen: +31 317 728888