Is numbers viewer friendly?

Thanks for that. I can do that now that now you've taught me something that I had never dreamed of. So that's what PDF is for. I'll be back to report what happened. Thanks again.

I converted the file to the PDF format, but I haven't yet heard back. I have to say that I find this to be disturbing. I'm probably forgetting, but I don't remember anything like this ever happening before. You've opened up a new world to me, although the term "underworld" seems more appropriate. I knew that Macs can't open windows files, but it never occurred to me that anything I did on my Mac was not universal. I haven't checked my new file myself, but I presume that PDF files can be opened by both PCs and Macs. If so, I guess i should make it a rule to always convert to PDF. Well, live and learn. I'll just have to make the most of it.

I just received word that my fellow member was able to open the PDF file I just sent to my Yahoo group. On the other hand, another friend of mine was able to open all of my files on a PC in a public library. Could it be that PC owners are able to use Numbers IF they have the proper tools? I'm obviously not a computer geek, but I do remember the term "codecs" . Could the proper "codec," or whatever, make PCs Numbers capable?