doc:   [
    DocGroup({"tag": "p"}, [
        DocChars("bxs13"), DocGroup({"client": "c", "tag": "caret"}, []),
        DocChars("8cFo")
    ]),
    DocGroup({"tag": "h3"}, [
        DocChars("h"), DocGroup({"client": "d", "tag": "caret"}, []),
        DocChars("51dT"), DocGroup({"tag": "caret", "client": "a"}, []),
        DocChars("8Y")
    ]),
    DocGroup({"tag": "h3"}, [
        DocChars("3"), DocGroup({"tag": "caret", "client": "b"}, []),
        DocChars("48")
    ]),
    DocGroup({"tag": "h3"}, [
        DocChars(" 1 F 6bP0C2u1pVT")
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "p"}, [
            DocChars("64")
        ]),
        DocGroup({"tag": "p"}, [
            DocChars("MP  Q    v 5C 8w  H ello world bBSctbx7")
        ]),
        DocGroup({"tag": "p"}, [
            DocChars("tjB")
        ])
    ]),
    DocGroup({"tag": "h2"}, [
        DocChars("73S M s up with you?")
    ])
]

a_del: [
    DelGroup([
        DelSkip(5), DelGroup([]),
        DelSkip(3), DelChars(1)
    ]),
    DelGroup([
        DelSkip(1), DelWithGroup([]),
        DelSkip(3), DelChars(1), DelGroup([]),
        DelChars(2)
    ]),
    DelGroup([
        DelChars(1), DelGroup([]),
        DelSkip(2)
    ])
]
a_add: [
    AddGroup({"tag": "p"}, [
        AddSkip(8), AddChars(" "), AddGroup({"tag": "caret", "client": "c"}, []),
        AddChars("1"), AddSkip(1), AddWithGroup([]),
        AddSkip(3), AddGroup({"tag": "caret", "client": "b"}, [])
    ]),
    AddGroup({"tag": "h2"}, [
        AddGroup({"tag": "caret", "client": "a"}, []),
        AddSkip(2)
    ])
]

b_del: [
    DelWithGroup([
        DelSkip(5), DelWithGroup([]),
        DelSkip(4)
    ]),
    DelWithGroup([
        DelSkip(1), DelGroup([]),
        DelSkip(4), DelWithGroup([]),
        DelSkip(2)
    ]),
    DelGroup([
        DelSkip(4)
    ])
]
b_add: [
    AddWithGroup([
        AddSkip(5), AddWithGroup([]),
        AddSkip(4)
    ]),
    AddWithGroup([
        AddSkip(1), AddChars("5t"), AddSkip(4), AddWithGroup([]),
        AddSkip(2)
    ]),
    AddGroup({"tag": "h3"}, [
        AddChars("l")
    ]),
    AddGroup({"tag": "p"}, [
        AddGroup({"tag": "caret", "client": "d"}, []),
        AddSkip(4)
    ])
]