What are the "Repeat" and "Shuffle" options on a Content slide used for?

Beaver Creek Baptist Church

And how do I enable them?

Jordan Sjodin

Repeat and shuffle are active when the content item contains multiple slides such as by adding ‘—‘ (two dashes) to the main content field. 

you could use this to shuffle and repeat a list of names or something. 

the same options should be available in Image slide show too.