Hello guys, I have a question about Preview - How do you loop a slideshow?

Had the "loop" feature using Preview in 10.4.11; upgaded to 10.5.8 and it's gone. Don't you have to work at "Taking" it away? Makes no sense. Now you have to look for a third market for something that was included in Preview since the first version was launched. ....I don't get this one.