On 05/02/2016 02:48 PM, wrote:

[snip]

I know .jpg . gif . mp3 .htm are universal. I suppose .doc is too, as
well as .txt. (not sure what a .xls is used for).


I seem to have heard of that filetype. Proprietary Excel spreadsheet format?

--
Mark Lloyd
http://notstupid.us/

"A dogma is the hand of the dead on the throat of the living." -- Lemuel
K. Washburn, Is The Bible Worth Reading And Other Essays