
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h1"}, [
            DocGroup({"tag": "caret", "client": "d"}, []),
            DocChars("c"), DocGroup({"client": "a", "tag": "caret"}, []),
            DocGroup({"client": "e", "tag": "caret"}, []),
            DocChars("F "), DocGroup({"tag": "caret", "client": "b"}, []),
            DocChars("4"), DocGroup({"tag": "caret", "client": "f"}, [])
        ]),
        DocGroup({"tag": "h1"}, [
            DocChars(" e0e M50"), DocGroup({"client": "c", "tag": "caret"}, []),
            DocChars("b")
        ]),
        DocGroup({"tag": "h1"}, [
            DocChars("P ")
        ]),
        DocGroup({"tag": "pre"}, [
            DocChars("u ")
        ]),
        DocGroup({"tag": "pre"}, [
            DocChars("aN dHello worl7What\'s up with you?")
        ])
    ])
]

a_del: [
    DelGroup([
        DelGroup([
            DelWithGroup([]),
            DelSkip(1), DelGroup([]),
            DelWithGroup([]),
            DelSkip(2), DelGroup([]),
            DelSkip(1), DelWithGroup([])
        ]),
        DelWithGroup([
            DelSkip(2), DelChars(4), DelSkip(1), DelChars(1), DelGroup([])
        ]),
        DelSkip(3)
    ])
]
a_add: [
    AddGroup({"tag": "h1"}, [
        AddChars("5"), AddGroup({"tag": "caret", "client": "a"}, []),
        AddChars("  "), AddGroup({"tag": "caret", "client": "b"}, []),
        AddWithGroup([]),
        AddSkip(1), AddChars("0"), AddWithGroup([]),
        AddSkip(2), AddChars("3"), AddSkip(1), AddWithGroup([])
    ]),
    AddWithGroup([
        AddSkip(2), AddGroup({"tag": "caret", "client": "c"}, []),
        AddChars(" "), AddSkip(1)
    ]),
    AddSkip(3)
]

b_del: [
    DelWithGroup([
        DelWithGroup([
            DelGroup([])
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddWithGroup([
            AddGroup({"tag": "caret", "client": "d"}, []),
            AddChars("J")
        ])
    ])
]
