---
foo: top scope
hello: world
bar:
    qux: $foo
blah:
    blah: self ref test
    ego: $blah
circ:
    circ: $prolog
    prolog: $cows_are_good
    cows_are_good: $circ
simple_circ:
    simple_circ: $simple_circ
bigcirc:
    thing: $level3
    level1:
        level2:
            level3:
                level4: 
                    level5: $thing
baz:
    foo: baz scope
    qux: $foo qux
    test: $hello
    quxx:
        -
            food:
                burger: $foo
                test: $hello
            fries: $qux
            test: $hello
        -
            foo: inner scope
            food:
                burger: $foo
                test: $hello
            fries: $qux
            test: $hello