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

Files: data/ExampleDb.rda
Documented: man/ExampleDb.Rd
  Example Change-O database

Files: data/ExampleTrees.rda
Documented: man/ExampleTrees.Rd
  Example Ig lineage trees

Files: R/sysdata.rda
Documentation: dump of system data of R run.

 -- Andreas Tille <tille@debian.org>  Mon, 17 Sep 2018 14:23:53 +0200
