Describes the levels in which the runtime can run.
public enum RuntimeLevel
The runtime is booting.
The runtime has failed to boot and cannot run.
The runtime has detected that Umbraco is not installed at all, ie there is no database, and is currently installing Umbraco.
The runtime has detected an up-to-date Umbraco install and is running.
The level is unknown.
The runtime has detected an Umbraco install which needed to be upgraded, and is currently upgrading Umbraco.