chunks:

-
    title: "Shown to instructor"
    id: hidden
    rules:
    -
        if_has_role: [instructor]
        weight: 100
        shown: True

    -
        weight: 0
        shown: False

    content: |

        # Hello instructors
        Hi!


-
    title: "empty rules"

    id: no_actual_rules
    rules: []

    content: |

        # All visitor can see this
        Welcome!

-
    title: "Display order"

    id: orders
    rules:
    -
        if_after: 2018-01-01
        weight: 200

    -
        weight: 50

    content: |

        # Where am I?