
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h3"}, [
            DocGroup({"client": "a", "tag": "caret"}, []),
            DocChars("  vWL"), DocGroup({"tag": "caret", "client": "d"}, []),
            DocChars("Lc")
        ]),
        DocGroup({"tag": "h2"}, [
            DocChars(" 2"), DocGroup({"tag": "caret", "client": "b"}, []),
            DocChars(" Q q e 48U2")
        ])
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, [
            DocChars("A"), DocGroup({"tag": "caret", "client": "c"}, []),
            DocChars("PFw  ")
        ])
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h3"}, [
            DocChars("88R up with you?")
        ])
    ])
]

a_del: [
    DelWithGroup([
        DelGroup([
            DelGroup([]),
            DelSkip(8)
        ])
    ])
]
a_add: [
    AddWithGroup([
        AddGroup({"tag": "pre"}, [
            AddGroup({"tag": "caret", "client": "a"}, []),
            AddChars("  "), AddSkip(8)
        ])
    ])
]

b_del: [
    DelGroup([
        DelWithGroup([
            DelWithGroup([]),
            DelSkip(5), DelWithGroup([]),
            DelSkip(2)
        ]),
        DelWithGroup([
            DelSkip(2), DelGroup([]),
            DelChars(2)
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddWithGroup([]),
        AddSkip(5), AddWithGroup([]),
        AddSkip(2)
    ]),
    AddWithGroup([
        AddSkip(2), AddChars("s"), AddGroup({"tag": "caret", "client": "b"}, [])
    ])
]
