Find your way around Hong Kong city's subway using the high resolution vector maps of the train network. The following metro rail lines are available: East Rail, Kwun Tong, Tsuen Wan, Island, Tung Chung, Airport Express, Tseung Kwan O, West Rail, Ma On Shan, and Disneyland Resort lines. The maps have small file size footprints but with many levels of zoom and can work offline without connecting to the Internet. Users can click the train station box labels to open the external Maps app, where they can use all the functions of the external app to visualize the surrounding area and/or perform routing for directions. There is also an offline function to calculate the best way to travel from a station to another station with a direction breakdown and timings (which may vary from the actual travelling time).