
doc:   [
    DocGroup({"tag": "h3"}, [
        DocChars("SSg67"), DocGroup({"tag": "caret", "client": "a"}, []),
        DocChars(" ")
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, [
            DocChars("0m2m"), DocGroup({"client": "c", "tag": "caret"}, []),
            DocChars("75")
        ])
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, [
            DocGroup({"client": "b", "tag": "caret"}, []),
            DocChars("OKDworRWhat\'s up with you?")
        ])
    ])
]

a_del: [
    DelGroup([
        DelChars(2), DelSkip(3), DelGroup([]),
        DelSkip(1)
    ]),
    DelWithGroup([
        DelGroup([
            DelSkip(4), DelWithGroup([]),
            DelSkip(2)
        ])
    ]),
    DelGroup([
        DelWithGroup([
            DelGroup([]),
            DelChars(1)
        ])
    ])
]
a_add: [
    AddGroup({"tag": "bullet"}, [
        AddGroup({"tag": "h3"}, [
            AddGroup({"tag": "caret", "client": "a"}, []),
            AddChars(" "), AddSkip(3), AddChars("F"), AddSkip(1)
        ])
    ]),
    AddWithGroup([
        AddGroup({"tag": "h2"}, [
            AddChars("p3"), AddSkip(4), AddWithGroup([]),
            AddSkip(2)
        ])
    ]),
    AddWithGroup([
        AddChars("u"), AddGroup({"client": "b", "tag": "caret"}, []),
        AddChars("S ")
    ])
]

b_del: [
    DelWithGroup([
        DelSkip(5), DelWithGroup([]),
        DelSkip(1)
    ]),
    DelWithGroup([
        DelGroup([
            DelChars(3), DelSkip(1), DelGroup([]),
            DelSkip(2)
        ])
    ]),
    DelWithGroup([])
]
b_add: [
    AddWithGroup([
        AddSkip(5), AddWithGroup([]),
        AddSkip(1)
    ]),
    AddWithGroup([
        AddGroup({"tag": "pre"}, [
            AddChars(" S"), AddSkip(3)
        ])
    ]),
    AddWithGroup([
        AddWithGroup([
            AddGroup({"tag": "caret", "client": "c"}, [])
        ])
    ])
]
