
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "pre"}, [
            DocGroup({"tag": "caret", "client": "b"}, []),
            DocGroup({"client": "g", "tag": "caret"}, []),
            DocGroup({"client": "d", "tag": "caret"}, []),
            DocChars("d R"), DocGroup({"client": "c", "tag": "caret"}, []),
            DocChars("hC 0k"), DocGroup({"client": "f", "tag": "caret"}, []),
            DocChars("3h ")
        ]),
        DocGroup({"tag": "h1"}, [
            DocChars("6q5A 2Kc")
        ]),
        DocGroup({"tag": "pre"}, [
            DocChars("73 x6"), DocGroup({"client": "e", "tag": "caret"}, []),
            DocChars(" q"), DocGroup({"tag": "caret", "client": "a"}, []),
            DocChars("2hat\'s up with you?")
        ])
    ])
]

a_del: [
    DelGroup([
        DelGroup([
            DelGroup([]),
            DelWithGroup([]),
            DelWithGroup([]),
            DelSkip(1), DelChars(1), DelSkip(1), DelWithGroup([]),
            DelSkip(5), DelWithGroup([]),
            DelSkip(3)
        ]),
        DelGroup([
            DelChars(1), DelSkip(7)
        ]),
        DelWithGroup([
            DelSkip(5), DelWithGroup([]),
            DelSkip(1), DelChars(1), DelGroup([])
        ])
    ])
]
a_add: [
    AddGroup({"tag": "h3"}, [
        AddWithGroup([]),
        AddWithGroup([]),
        AddSkip(1), AddGroup({"client": "b", "tag": "caret"}, []),
        AddChars("l"), AddSkip(1), AddWithGroup([]),
        AddSkip(5), AddWithGroup([]),
        AddSkip(3)
    ]),
    AddGroup({"tag": "h3"}, [
        AddSkip(1), AddGroup({"client": "a", "tag": "caret"}, []),
        AddSkip(6)
    ]),
    AddWithGroup([
        AddSkip(5), AddWithGroup([]),
        AddSkip(1)
    ])
]

b_del: [
    DelWithGroup([
        DelGroup([
            DelWithGroup([]),
            DelWithGroup([]),
            DelWithGroup([]),
            DelSkip(1), DelChars(2), DelGroup([]),
            DelSkip(9)
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddGroup({"tag": "p"}, [
            AddWithGroup([]),
            AddWithGroup([]),
            AddWithGroup([]),
            AddSkip(1), AddChars("O"), AddGroup({"client": "c", "tag": "caret"}, []),
            AddChars(" ")
        ]),
        AddGroup({"tag": "p"}, [
            AddChars(" "), AddSkip(9)
        ])
    ])
]
