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

Files: data/exp2d.rda
Documented: man/exp2d.Rd
   2-d Exponential Data

 -- Andreas Tille <tille@debian.org>  Sun, 11 Mar 2018 19:25:25 +0100
