File copy function?

I'm looking for an exported function to copy files. I see SYSTEM::COPY-FILE, which works as I would expect but is an internal symbol. Looking briefly at the HyperSpec, I found just RENAME-FILE (not what I need).

Easy enough to write my own copy function, but if LispWorks already has something exported I'd naturally prefer that. Thanks!

-- david

For wisdom is more precious than rubies,
and nothing you desire can compare with her.
  -- Proverbs 8:11

But all the world understands my language.
  -- Franz Joseph Haydn