storing a condition in a variable

How do I store a match condition that is to be used frequently
into a variable?

Also:

:0:
* ^FROMsomeone
* ! ^TOjohn
do_something

If the above recipe does a logical ANDing, how do I do a logical
Or?

thanx

-- 
Eric Smith
_______________________________________________
procmail mailing list
procmail(_at_)lists(_dot_)RWTH-Aachen(_dot_)DE
http://MailMan.RWTH-Aachen.DE/mailman/listinfo/procmail