[cylc]
    [[events]]
        inactivity timeout = PT30S
        abort on inactivity timeout = True
        abort on stall timeout = True
        stall timeout = PT0S
[scheduling]
    [[graph]]
        R1 = foo
[runtime]
    [[foo]]
        script = """
            echo "BEEF ${BEEF:-undefined}"
            echo "CHEESE ${CHEESE:-undefined}"
                 """
