
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, [
            DocChars("N"), DocGroup({"tag": "caret", "client": "c"}, []),
            DocChars(" ")
        ]),
        DocGroup({"tag": "h2"}, []),
        DocGroup({"tag": "h2"}, [
            DocGroup({"tag": "caret", "client": "d"}, []),
            DocChars("P 7")
        ])
    ]),
    DocGroup({"tag": "p"}, [
        DocGroup({"client": "a", "tag": "caret"}, []),
        DocGroup({"tag": "caret", "client": "b"}, []),
        DocChars("8")
    ]),
    DocGroup({"tag": "p"}, [
        DocChars("  at\'s up with you?")
    ])
]

a_del: [
    DelGroup([
        DelGroup([
            DelSkip(1), DelWithGroup([]),
            DelSkip(1)
        ]),
        DelGroup([]),
        DelWithGroup([
            DelWithGroup([]),
            DelSkip(2), DelChars(1)
        ])
    ]),
    DelWithGroup([
        DelGroup([]),
        DelGroup([]),
        DelSkip(1)
    ]),
    DelWithGroup([
        DelChars(1)
    ])
]
a_add: [
    AddGroup({"tag": "h2"}, [
        AddSkip(1)
    ]),
    AddGroup({"tag": "p"}, [
        AddGroup({"client": "a", "tag": "caret"}, []),
        AddWithGroup([]),
        AddSkip(1)
    ]),
    AddWithGroup([
        AddWithGroup([]),
        AddSkip(2)
    ]),
    AddWithGroup([
        AddSkip(1), AddChars("p5"), AddGroup({"tag": "caret", "client": "b"}, [])
    ]),
    AddWithGroup([])
]

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