
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, [
            DocGroup({"client": "d", "tag": "caret"}, []),
            DocChars(" X"), DocGroup({"client": "b", "tag": "caret"}, []),
            DocChars("Sa 1"), DocGroup({"client": "f", "tag": "caret"}, [])
        ]),
        DocGroup({"tag": "pre"}, [
            DocGroup({"tag": "caret", "client": "c"}, []),
            DocChars("A Mx 3d AlWI4nB0Y  74M P0CO  5pLS"), DocGroup({"client": "a", "tag": "caret"}, []),
            DocChars("P")
        ])
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, []),
        DocGroup({"tag": "h2"}, [
            DocChars("4"), DocGroup({"tag": "caret", "client": "e"}, []),
            DocChars("up with you?")
        ])
    ])
]

a_del: [
    DelGroup([
        DelWithGroup([
            DelWithGroup([]),
            DelSkip(2), DelWithGroup([]),
            DelSkip(4), DelWithGroup([])
        ]),
        DelWithGroup([
            DelWithGroup([]),
            DelSkip(27), DelChars(6), DelGroup([]),
            DelChars(1)
        ])
    ]),
    DelWithGroup([
        DelGroup([]),
        DelGroup([
            DelSkip(14)
        ])
    ])
]
a_add: [
    AddWithGroup([
        AddWithGroup([]),
        AddSkip(2), AddWithGroup([]),
        AddSkip(4), AddWithGroup([])
    ]),
    AddWithGroup([
        AddWithGroup([]),
        AddSkip(27), AddChars("j ")
    ]),
    AddWithGroup([
        AddGroup({"tag": "h2"}, [
            AddChars("7"), AddGroup({"client": "a", "tag": "caret"}, []),
            AddSkip(14)
        ])
    ])
]

b_del: [
    DelWithGroup([
        DelGroup([
            DelWithGroup([]),
            DelSkip(1), DelChars(1), DelGroup([]),
            DelChars(3), DelSkip(2)
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddGroup({"tag": "h2"}, [
            AddWithGroup([]),
            AddSkip(1), AddChars("7"), AddSkip(1), AddGroup({"tag": "caret", "client": "b"}, []),
            AddSkip(1)
        ])
    ])
]
