Basic operations
Root element
/
Element by tag name
//<cars><car></car></cars>
/cars
/cars/car
Element by attribute name
//<cars><car make="lexus"></car></cars>
/cars/car[@make="lexus"]
/
//<cars><car></car></cars>
/cars
/cars/car
//<cars><car make="lexus"></car></cars>
/cars/car[@make="lexus"]