I haven't found any setting specifically for that, but I have found that the
number of slides displayed is relative to the width of that pane.
As you drag the sizing bar left/right the thumbnails get proportionately
narrower/wider. The wider, the taller, so fewer slides. The narrower, the
shorter, so more slides. I've had as many as 7 at once & that seems to be
the limit. That will apparently vary depending on display size & resolution.
I'm running a 17" LCD @ 1280X1024. If I drop to 1024X768 the max is 5
slides.
HTH |:>)