
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "p"}, [
            DocGroup({"tag": "caret", "client": "c"}, []),
            DocChars(" ")
        ]),
        DocGroup({"tag": "h1"}, [
            DocGroup({"tag": "caret", "client": "b"}, []),
            DocChars("R5 1D K02h"), DocGroup({"client": "a", "tag": "caret"}, []),
            DocChars(" ")
        ]),
        DocGroup({"tag": "p"}, [
            DocChars("1")
        ]),
        DocGroup({"tag": "p"}, [
            DocChars("No3 rllo worldj")
        ])
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h1"}, [
            DocChars("i ")
        ]),
        DocGroup({"tag": "h1"}, [
            DocChars("t\'s up with you?")
        ])
    ])
]

a_del: [
    DelGroup([
        DelGroup([
            DelWithGroup([]),
            DelSkip(1)
        ]),
        DelGroup([
            DelGroup([]),
            DelSkip(1), DelChars(2), DelSkip(3), DelChars(1), DelSkip(1), DelChars(2), DelGroup([]),
            DelChars(1)
        ]),
        DelSkip(2)
    ])
]
a_add: [
    AddGroup({"tag": "p"}, [
        AddGroup({"client": "b", "tag": "caret"}, []),
        AddChars("8"), AddGroup({"client": "a", "tag": "caret"}, []),
        AddChars("s  "), AddWithGroup([]),
        AddSkip(5), AddChars(" "), AddSkip(1)
    ]),
    AddSkip(2)
]

b_del: [
    DelWithGroup([
        DelWithGroup([
            DelGroup([]),
            DelSkip(1)
        ]),
        DelGroup([
            DelWithGroup([]),
            DelSkip(10), DelWithGroup([]),
            DelSkip(1)
        ]),
        DelGroup([
            DelChars(1)
        ]),
        DelGroup([
            DelSkip(15)
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddWithGroup([
            AddSkip(1)
        ]),
        AddGroup({"tag": "h1"}, [
            AddWithGroup([]),
            AddSkip(10), AddWithGroup([]),
            AddSkip(1), AddGroup({"client": "c", "tag": "caret"}, []),
            AddChars("t"), AddSkip(15)
        ])
    ])
]
