
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h1"}, [
            DocChars("8 ")
        ]),
        DocGroup({"tag": "h1"}, [
            DocChars("HR"), DocGroup({"tag": "caret", "client": "a"}, []),
            DocChars(" kN 3")
        ])
    ]),
    DocGroup({"tag": "p"}, [
        DocChars(" "), DocGroup({"client": "b", "tag": "caret"}, []),
        DocChars("  H  Vg S3GBHello worlhat\'s up with you?")
    ])
]

a_del: [
    DelGroup([
        DelWithGroup([
            DelChars(2)
        ]),
        DelWithGroup([
            DelChars(2), DelGroup([]),
            DelSkip(5)
        ])
    ]),
    DelGroup([
        DelChars(1), DelGroup([]),
        DelChars(1), DelSkip(39)
    ])
]
a_add: [
    AddWithGroup([
        AddChars("AQ")
    ]),
    AddGroup({"tag": "bullet"}, [
        AddWithGroup([
            AddSkip(5)
        ])
    ]),
    AddGroup({"tag": "pre"}, [
        AddGroup({"tag": "caret", "client": "a"}, []),
        AddChars("2y"), AddGroup({"tag": "caret", "client": "b"}, []),
        AddChars("v")
    ]),
    AddGroup({"tag": "pre"}, [
        AddSkip(39)
    ])
]

b_del: [
    DelWithGroup([
        DelGroup([
            DelChars(1), DelSkip(1)
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddGroup({"tag": "h2"}, [
            AddChars("0"), AddGroup({"client": "c", "tag": "caret"}, []),
            AddChars("3"), AddSkip(1)
        ])
    ])
]
