Microsoft has been granted a patent on the double-click by the US Patents and Trademark Office. The patent, number 6,727,830, was granted on April 27. An abstract of the application says: “A method and system are provided for extending the functionality of application buttons on a limited resource computing device. Alternative application functions are launched based on the length of time an application button is pressed. A default function for an application is launched if the button is pressed for a short, i.e., normal, period of time.” Our editorial on patents.