An opened status file means that its file entity is on current or standby status. A closed status file means that its file entity is on invalid or shutdown status.

When an invalid status file is opened by the stsopen command, it is placed on standby status.

If the current status file is under one-system operation, execute the stsinit command to initialize the file that has been shut down because of an error and then execute the stsopen command for use as a current file.

When a standby status file is closed by the stsclose command, it is placed on invalid status.