I have added some text at [[Commons:Project scope/Proposal#Pdf and Djvu
formats]] dealing with these based on the discussion on the talk page.
Users are by no means unanimous about which files should be allowed, and
I have tried to follow the majority opinion. Thus, the suggestion is
that if a Pdf or Djvu file is educationally useful even to a single
other Wiki it should be kept. Would you like to comment before this page
goes live? Please do so at the bottom of the talk page.
Regards,
Michael