
doc:   [
    DocGroup({"tag": "h3"}, [
        DocChars(" "), DocGroup({"client": "a", "tag": "caret"}, []),
        DocChars("k MelloBA What\'s up with you?")
    ])
]

a_del: [
    DelGroup([
        DelChars(1), DelGroup([]),
        DelSkip(1), DelChars(1), DelSkip(1), DelChars(2), DelSkip(24)
    ])
]
a_add: [
    AddGroup({"tag": "h2"}, [
        AddGroup({"client": "a", "tag": "caret"}, []),
        AddGroup({"client": "c", "tag": "caret"}, []),
        AddChars("K6 "), AddGroup({"client": "b", "tag": "caret"}, []),
        AddChars("  4")
    ]),
    AddGroup({"tag": "bullet"}, [
        AddGroup({"tag": "h2"}, [
            AddChars(" "), AddSkip(1), AddChars("6"), AddSkip(1), AddChars("0"), AddGroup({"tag": "caret", "client": "d"}, []),
            AddSkip(24)
        ])
    ])
]

b_del: [
    DelGroup([
        DelSkip(31)
    ])
]
b_add: [
    AddGroup({"tag": "bullet"}, [
        AddGroup({"tag": "h3"}, [
            AddChars("M"), AddGroup({"tag": "caret", "client": "e"}, []),
            AddSkip(31)
        ])
    ])
]
