Add a Caption To an Existing Slide

## Can you think of a better caption?
Each slide can have more than one caption. Check out the current slide show and add a caption (or two).
If you need help, check out the Appendix in the training manual.

Start by reviewing the current slide show and the Appendix in the training manual to identify the existing slide and its editable source. Add one or two captions to that slide, then verify that the captions appear correctly in the slide show.

Written by the indexing model from the issue text.