Use your favourite editor to edit the resulting text file. In this way, making multiple changes or additions to the contents of the 'Addresses' is a lot easier than editing the contents of each template object in turn.
When you have finished editing the addresses text file, save and close it, then double-click the 'Addresses - Import' program object in the 'Accessories' folder to recreate the entries in the 'Addresses' folder.
Note that the address text file must contain the complete data for all the entries in the 'Addresses' folder, so any additions must be inserted into an existing address text file.