
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, [
            DocGroup({"tag": "caret", "client": "b"}, []),
            DocChars("  TF"), DocGroup({"client": "c", "tag": "caret"}, []),
            DocChars(" e"), DocGroup({"client": "d", "tag": "caret"}, [])
        ]),
        DocGroup({"tag": "p"}, [
            DocChars(" 17elloGr"), DocGroup({"tag": "caret", "client": "a"}, []),
            DocChars("Yhat\'s up with you?")
        ])
    ])
]

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

b_del: [
    DelWithGroup([
        DelGroup([
            DelWithGroup([]),
            DelSkip(4), DelGroup([]),
            DelSkip(3)
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddGroup({"tag": "h2"}, [
            AddChars(" "), AddGroup({"client": "c", "tag": "caret"}, []),
            AddWithGroup([]),
            AddSkip(7)
        ])
    ])
]
