Hiding Slides

Any hidden slides are not displayed during a slide show
Any hidden slides are flagged in the Slide Sorter view
what about the Slide pane (Normal view)

You can hide slides you do not want to show in a slide show. Tools > Hide Slide. Be sure you are in slide sorter view.

When a hidden slide is next in line an asterisk appears in the slide window (bottom-right corner).

Just click on the asterisk to display the slide (or press H). You may have to move the mouse slightly to make the asterisk appear.