To create a nonlinear presentation that has external links, the designer should
include every slide in an order that loops continuously, causing the whole presentation to repeat.
include hyperlinks on each page to a table of contents that shows the order of the presentation.
include hyperlinks to websites or other slides that the user can choose at will.
include slides that move from start to finish following the same path each time.

The school cafeteria can make pizza for approximately $0.30 a slice. the cost of kitchen use and cafeteria staff runs about $200 per day. the pizza den nearby will deliver whole pizzas for $9.00 each. the cafeteria staff cuts the pizza into eight slices and serves them in the usual cafeteria line. with no cooking duties, the staff can be reduced by half, for a fixed cost of $75 per day. should the school cafeteria make or buy its pizzas?