Heading & Direction
One of the parameters that is output from GPS receivers is the Heading, a number from 0 to 360 that shows the direction the vehicle is going each second. This is now stored with the data in the field and shown on the View GPS Data screen as shown here. The Heading is also available on the street map when you edit your runs; when you select a point on the map one of the stats shown is the Heading. This is useful to make sure the run you are editing is going in the direction you think it is (it is not difficult to get confused when you have lots of runs to organize).
There also is an option in GPS2LT and GPS2PDA to set the direction for the next run you do. This direction is stored with the data and shown on this screen in the Dir column. The software adds the Dir information to the run name when it creates the run files from the field data. This makes organizing your runs a little easier.