I modified the settings using various combinations/ permutations in the configuration page (thanks, I knew it was there), but still can't get it to display more than ten. That doesn't matter to me now, because my 'previous/next' links are now working.
I looked directly into the database and found two lines with references to 'for/next'. Using my usual highly scientific methods ('Eeny, meeny, miney, mo, one of these is going to go...'), I took a stab in the dark and deleted one. My article listings suddenly had a for/next link. Lovely. But my catalog pages didn't. Oops. I reinstated what I'd deleted, and the for/next link was back in my catalog pages. Weirdly, it was still there in my article listings too. I don't understand that, but I'm certainly not complaining about it : )
Next up, I decided I'd install the latest addition to Article Manager - 'MOD TO ALLOW DIRECT LINKS TO ARTICLES FROM TOP LEVEL', as I have a couple of uses in mind for this. I'm pretty sure I followed the instructions exactly, but the menu links in my Articles box became URLs instead. I uninstalled it then tried again later, with the same result. I'm hoping you can shed some light on this, as I think my 'accidentally delete something vital, then hurriedly reinstate it' method is only going to work once for me : )