
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h1"}, [
            DocGroup({"tag": "caret", "client": "b"}, []),
            DocChars("ht"), DocGroup({"tag": "caret", "client": "d"}, []),
            DocChars(" ")
        ]),
        DocGroup({"tag": "h1"}, [
            DocChars("5   l"), DocGroup({"tag": "caret", "client": "f"}, []),
            DocChars(" Y yy   hb4"), DocGroup({"client": "a", "tag": "caret"}, [])
        ])
    ]),
    DocGroup({"tag": "h1"}, [
        DocChars("H5")
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h3"}, [
            DocChars("8"), DocGroup({"client": "c", "tag": "caret"}, []),
            DocChars("8 "), DocGroup({"tag": "caret", "client": "e"}, []),
            DocChars("lk"), DocGroup({"client": "g", "tag": "caret"}, [])
        ])
    ]),
    DocGroup({"tag": "pre"}, [
        DocChars("HTg73F 8hat\'s up with you?")
    ])
]

a_del: [
    DelGroup([
        DelGroup([
            DelGroup([]),
            DelChars(1), DelSkip(1), DelWithGroup([]),
            DelSkip(1)
        ]),
        DelWithGroup([
            DelSkip(5), DelWithGroup([]),
            DelSkip(10), DelChars(1), DelGroup([])
        ])
    ]),
    DelWithGroup([
        DelChars(1), DelSkip(1)
    ]),
    DelWithGroup([
        DelWithGroup([
            DelSkip(1), DelGroup([])
        ])
    ])
]
a_add: [
    AddGroup({"tag": "h1"}, [
        AddGroup({"client": "a", "tag": "caret"}, []),
        AddChars("8"), AddSkip(1), AddChars("I")
    ]),
    AddGroup({"tag": "p"}, [
        AddWithGroup([]),
        AddSkip(1), AddGroup({"tag": "caret", "client": "b"}, [])
    ]),
    AddWithGroup([
        AddSkip(5), AddWithGroup([]),
        AddSkip(10)
    ]),
    AddWithGroup([
        AddGroup({"client": "c", "tag": "caret"}, []),
        AddChars("  o"), AddSkip(1)
    ]),
    AddWithGroup([
        AddWithGroup([
            AddSkip(1)
        ])
    ])
]

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