This command serves to store the changes to the coordinate list in a database. You can use this command only if the coordinate list was created by import from a database.
You can find the detailed information on the work with databases in the User Manual.
If some points are selected on the coordinate list, only these points will be stored in the database. If no points are selected, the entire coordinate list will be stored in the database.
You can find the detailed information on the work with databases in the User Manual.