[scheduling]
    [[graph]]
        R1 = "foo => bar"
[runtime]
    [[foo]]
        script = """
            cylc ping $CYLC_WORKFLOW_ID
            cylc ping --verbose $CYLC_WORKFLOW_ID
        """
    [[bar]]
        script = [[ ! $(cylc ping $CYLC_WORKFLOW_ID-non-existent) ]]
