After a runspace is opened, Windows PowerShell host applications can runs startup scripts that include the profiles and initialization scripts in the runspace configuration. For more information about runspace configuration, see the RunspaceConfiguration class.
The runspace does not provide output. Data is returned to the host application through the pipelines executing within the runspace. For more information about pipeline output, see the Pipeline class.
It is permitted to derive from this class. However, there is no established scenario for doing this, nor has deriving from this class been tested.
For more information about how host applications, the runspace, and pipelines work together, see Windows PowerShell Runspaces in the Windows PowerShell Programmer's Guide.