Which filetypes are backed up

Thanks for the reply.  This confirms what I suspected and had found from the first link but not sure why it says version 1.6 which implies it might be different for other versions.

It is very misleading to say that things are backed up when they are not and to say that almost all filetypes are covered when some of the common ones are not covered.  They should certainly fix this, either by making it back them up (best idea) or by changing the wording.