...
GiD_Project backup save <name>
To save as <name> the model. (name without the .gid extension)
GiD_Project backup read <name>
To read the model <name>, saved with backup-fast format
...
GiD_Project backup save <name>
To save as <name> the model. (name without the .gid extension)
GiD_Project backup read <name>
To read the model <name>, saved with backup-fast format