"I am here to buy a car. The most important criteria for me are price, safety rating, and color, in that order. What's available?"
"I am here to buy a car. I'm interested only in fuel-efficient cars—those that yield greater than 40 miles per gallon (mpg)—and would like to begin my search from there."
shortcuts, links whose target is a page deeper in the hierarchy;
back links to pages at levels higher than that of the current page; and
multiclassification links, which bridge unconnected but seemingly related topics.
"I am interested in buying a car that runs on diesel fuel, but I've heard that diesel engines are usually available only for cars with a manual transmission. I want an automatic transmission. Are any diesel cars equipped with an automatic transmission?"
"I'm interested in a Lexus. I want one whose fuel efficiency is comparable to the Toyota Camry."
• rigid navigation orders, unexposed dependencies, and supported procedural tasks or
• rigid navigation orders, exposed dependencies, and supported procedural tasks