
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h1"}, [
            DocGroup({"client": "b", "tag": "caret"}, []),
            DocChars(" qV6c7H")
        ]),
        DocGroup({"tag": "h2"}, [
            DocGroup({"tag": "caret", "client": "d"}, []),
            DocChars("u y  g8 "), DocGroup({"client": "c", "tag": "caret"}, []),
            DocGroup({"client": "e", "tag": "caret"}, []),
            DocChars("7")
        ]),
        DocGroup({"tag": "h3"}, [
            DocChars("D"), DocGroup({"client": "a", "tag": "caret"}, []),
            DocChars("Hello worldWhat\'s up with you?")
        ])
    ])
]

a_del: [
    DelGroup([
        DelWithGroup([
            DelWithGroup([]),
            DelSkip(7)
        ]),
        DelWithGroup([
            DelWithGroup([]),
            DelSkip(8), DelWithGroup([]),
            DelWithGroup([]),
            DelSkip(1)
        ]),
        DelWithGroup([
            DelChars(1), DelGroup([]),
            DelChars(1)
        ])
    ])
]
a_add: [
    AddWithGroup([
        AddWithGroup([]),
        AddSkip(7)
    ]),
    AddWithGroup([
        AddWithGroup([]),
        AddSkip(8), AddWithGroup([]),
        AddWithGroup([]),
        AddSkip(1), AddGroup({"tag": "caret", "client": "a"}, [])
    ]),
    AddWithGroup([])
]

b_del: [
    DelWithGroup([
        DelGroup([
            DelGroup([]),
            DelSkip(6), DelChars(1)
        ]),
        DelWithGroup([])
    ])
]
b_add: [
    AddWithGroup([
        AddGroup({"tag": "h1"}, [
            AddChars(" "), AddSkip(6), AddGroup({"client": "b", "tag": "caret"}, [])
        ]),
        AddWithGroup([])
    ])
]
