Fortigate config-save Timeout

With the following command a fortigate can revert to the old configuration after a timeout. This command is usefull for a remote configuration on the extern interface.
#config system global
#cfg-revert-timeout
#end

With this command you can save the the configruation in the manual and in the revert mode.
#exec cfg save

In the manual- and revert Mode can you revert to the saved configuration with the following command:
#exec cfg reload