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 opening the current slide show and reviewing the existing slide content; the issue does not name a file or slide. Use the Appendix in the training manual for guidance on captions. Done means one existing slide displays a useful additional caption, or two if appropriate.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.