Stylesheet syntax for enabling Neatline widgets?

What is the correct syntax for enabling the timeline and waypoint widgets with Neatline Stylesheets?

.test {
widgets: ??????;

I've tried a bunch of different things but nothing seems to work, and I can't find any documentation beyond the main stylesheets documentation page.

Thanks very much!

.all {
widgets: Waypoints;

Will enable Waypoints for all items on the map.