
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, [
            DocChars("p"), DocGroup({"tag": "caret", "client": "a"}, []),
            DocChars("0"), DocGroup({"client": "c", "tag": "caret"}, []),
            DocChars("    YVG")
        ])
    ]),
    DocGroup({"tag": "pre"}, [
        DocChars(" v"), DocGroup({"tag": "caret", "client": "b"}, []),
        DocChars("Y0wI2BX  541em"), DocGroup({"tag": "caret", "client": "e"}, [])
    ]),
    DocGroup({"tag": "h1"}, [
        DocGroup({"client": "d", "tag": "caret"}, []),
        DocChars(" 4")
    ]),
    DocGroup({"tag": "h1"}, [
        DocChars("\'s up with you?")
    ])
]

a_del: [
    DelGroup([
        DelWithGroup([
            DelChars(1), DelGroup([])
        ])
    ])
]
a_add: [
    AddWithGroup([
        AddChars(" "), AddGroup({"tag": "caret", "client": "a"}, []),
        AddChars("j")
    ])
]

b_del: [
    DelWithGroup([
        DelGroup([
            DelSkip(1), DelWithGroup([]),
            DelSkip(1), DelWithGroup([]),
            DelSkip(6), DelChars(1)
        ])
    ]),
    DelWithGroup([
        DelChars(1), DelSkip(1), DelGroup([])
    ])
]
b_add: [
    AddWithGroup([
        AddGroup({"tag": "pre"}, [
            AddSkip(1), AddWithGroup([]),
            AddSkip(1), AddWithGroup([]),
            AddSkip(6), AddChars("0")
        ])
    ]),
    AddWithGroup([
        AddGroup({"client": "b", "tag": "caret"}, []),
        AddSkip(1)
    ])
]
