Procmail Question...

I understand one of the ways to create an alias or email list using
procmail, I can do the following in '.procmail.rc'...

: 0 c
* ^From *
! john@doe.com, jane@doe.com, bill@clinton.com (and so on...)

What if I have a long list? Is it a way I can put all those email
address on a seperate text file?

Thanx for helping a newbie. :-)

Chuck