# File types needing extensions.

I’m asked for a document to be Text, PDF or PS. So I fire up vi to make sure I’m not getting any extra formatting stuff in my text file and submit it. I get back a message saying the type is not permitted, as only: “plain text (.txt), Adobe (.pdf), or postscript (.ps)” are allowed. I gave you plain text, you dolt. In fact, I guess I could have given you a tiff image file , as long as it had a txt extension.