[Orgmode] Passing an option to org-file-apps?

[anhnmncb]

Hi, list,
I have an external link like this:
  [[file:~/doc/foo.pdf]]
And I have configured to use xpdf to open it, but every time I open it,
it always at the first page.

If can I pass an option to xpdf, so after I finish reading, I change the
page number, then next time I open it, it will automatically open that
page for me? 

Something like this:
  [[file:~/doc/foo.pdf 25]]
So org will invoke xpdf in this way: xpdf ~/doc/foo.pdf 25.

-- 
Regards,

  anhnmncb
 gpg key: 44A31344