This property defines the name you will have when you play multiplayer. It is considered polite not to leave the name as 'Player'. It doesn't have to be anything special - possibly your nickname, forename, or initials. Use your imagination.
Changing your name
To change your name during a game, the
name console command can be used.
To do this, open the console and type
name "<newname>", replacing <newname> with your new name.
The player name that you set sometimes replaces the town that you built in first (i.e. "Blah" Transport instead of Gilwood Transport)