How can I force a new page in textual printouts?

["XRAY::RSTARSEAN" <rstarsean%xray.decnet@bilbo.mgh.harvard.edu>]

I'd like to create a formatted stream containing embedded form feeds. I've
tried two different approaches:
    (format stream "~|")
and 
    ctrl-q ctrl-l
Neither creates a page break when the output is printed on my laserwriter.
Could someone please point out the obvious to me? Many thanks....

Sean Doyle
doyle@sisu.mgh.harvard.edu