In the second step of the Import Text Wizard, you specify which columns of data from your text file (bottom table)
correspond to data fields in ExpertGPS (top table). Click on a column in the top table, click on the corresponding column
in the bottom table, and click the Apply button.
If your text file has a header row, the Import Text Wizard will compare the names of your columns with the names of
data fields in ExpertGPS, and assign matching columns automatically.