Explanation for binary files inside source package according to
  https://lists.debian.org/debian-devel/2013/09/msg00332.html

Files: data/pbmc.rda
Documented: man/pbmc.Rd
  Peripheral Blood Mononuclear Cells (PBMCs)

 -- Steffen Moeller <moeller@debian.org>  Mon, 12 Aug 2019 15:05:16 +0200
