.SPG fájlkiterjesztés

TCP Optimizer Backup Fájl

Contains a backup configuration of network settings
created with TCP Optimizer, a utility developed by SpeedGuide.net; may
be used to restore a previous system state; can be opened by selecting
"File->Restore backed up settings" within TCP Optimizer.

TCP Optimizer 2 and later automatically backs up previous network
settings in a file named "sg_backup_[date]-[time].spg."