     })
 
     // Renders "100"
-    let template = Template(string:"{{square(x)}}")!
-    template.render(Box(["square": box, "x": Box(10)]))!
+    let template = try! Template(string:"{{square(x)}}")
+    try! template.render(Box(["square": box, "x": Box(10)]))
 
 
 ### render

        let dictionary: NSDictionary = [
            "firstName": "Freddy",
            "lastName": "Mercury"]
        let template = Template(string: "{{firstName}} {{lastName}}")!
        let rendering = template.render(Box(dictionary))!


    ### Rendering

        }

        // Renders "Tom Selleck"
        let template = try! Template(string: "{{person.fullName}}")
        let person = Person(firstName: "Tom", lastName: "Selleck")
        try! template.render(Box(["person": Box(person)]))

    However, there are multiple ways to build a box, several `Box()` functions.
    See their documentations.
