
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "p"}, [
            DocChars(" "), DocGroup({"tag": "caret", "client": "a"}, []),
            DocChars("35iyy"), DocGroup({"tag": "caret", "client": "c"}, []),
            DocChars("8 0")
        ]),
        DocGroup({"tag": "p"}, [
            DocChars("H")
        ]),
        DocGroup({"tag": "pre"}, [
            DocGroup({"client": "b", "tag": "caret"}, []),
            DocChars("Hello Hhat\'s up with you?")
        ])
    ])
]

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

b_del: [
    DelWithGroup([
        DelGroup([
            DelSkip(1), DelWithGroup([]),
            DelSkip(3), DelChars(2), DelGroup([]),
            DelChars(2), DelSkip(1)
        ]),
        DelGroup([
            DelChars(1)
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddGroup({"tag": "h2"}, [
            AddSkip(1), AddWithGroup([]),
            AddSkip(3), AddGroup({"tag": "caret", "client": "c"}, []),
            AddSkip(1)
        ])
    ])
]
