Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for concurrent display of applications between devices. One of the methods includes establishing full duplex communication session with a first application on a first computing device using a second application. The method includes receiving a user interface image from the first application on the first computing device. The method includes displaying the user interface image on a second user interface of the computer system. The method includes generating an overlay image including one or more annotations to the user interface image. The method also includes sending the overlay image to the first computing device.

Abstract: A method for pressure testing an engine to detect possible oil seal leaks. The engine is charged with a predetermined pressure while air pressure is also applied to an EGR valve intake port to offset leakage inherent in the EGR valve. Thereafter, a pressure drop in the engine pressure is used to determine whether an oil seal leak may be present. Applying pressurized air to the EGR valve intake port compensates or EGR valve leakage and prevents the EGR valve leakage from masking possible oil seal leaks, thereby making the system more sensitive to such potential oil seal leaks.

Abstract: A web navigation scheme is disclosed that allows for a multi-dimensional navigation by a method such as a one-click command on a navigational button. The web navigation scheme preserves a multiple-dimension map that a user has created by browsing. Accordingly, the user can retrace a search path in more than a simple, forward-and-back path.