Will give you the true distance between two world coordinates. (Straight line distance) On land, this command will prompt for two world coordinates. From sea, only one location is asked for and the distance is then calculated from the current ships position.
DISTA[nce]Example:
[TAVEUNI : 92/0]: DISTANCE From world location (X,Y)? 494,483 To world location (X,Y)? 209,380 From 494,483 to 209,380 Distance = 303.0, Direction = 289.9