Invisible .pdf files

[Timothy Murphy]

Kevin Kofler wrote:

> Timothy Murphy wrote:
>> In each case the file is immediately opened in acroread
>> (ie I don't start acroread).
> 
> By the way, what's wrong with Okular?

I'd never thought of using Okular,
but now I'm giving it a try.

I must admit I'm puzzled about where exactly the choice is made:
Is it in System Settings=>File Associations ?
Or is it in Firefox=>Edit=>Preferences=>Applications ?
Or is it somewhere else?

I see that in Firefox Preferences there are 2 relevant entries:
PDF Document -> xpdf
Portable Document Format (PDF) -> Use Okular (default)
What is the difference between these?
And which is followed?

Incidentally, how can one tell which PDF reader is being used
if one browses to a PDF file?
>From the look of the page, it seems as though I'm using xpdf
to view PDF files.
(I've set Applications/PDF to Okular
in System Settings=>File Associations
but this doesn't seem to have any effect in Firefox.



-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College Dublin