I accidently hid a slide, but could find no clearcut way
to UNhide it. What am I missing?
Change to Slide Sorter view.
The hidden slide will have a box around the slide number in the lower right
corner and a slash through the number. Rightclick the slide image and click
Hide Slide on the popup menu.
Hide Slide is also on the Slide Show menu - you can use that in Normal View.
It's also on the popup when you click a slide in the Slide Pane in 2002 and
up.
In sorter view, you can select multiple slides and hide 'em all or unhide
'em all in one swell foop.