
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h2"}, [
            DocChars("4"), DocGroup({"client": "d", "tag": "caret"}, [])
        ]),
        DocGroup({"tag": "h2"}, [
            DocGroup({"tag": "caret", "client": "g"}, []),
            DocChars("X2")
        ]),
        DocGroup({"tag": "p"}, [
            DocChars(" Rj"), DocGroup({"client": "c", "tag": "caret"}, []),
            DocChars("V 6Jb ")
        ]),
        DocGroup({"tag": "p"}, [
            DocGroup({"tag": "caret", "client": "a"}, []),
            DocChars("3 6 2u ")
        ])
    ]),
    DocGroup({"tag": "p"}, [
        DocGroup({"client": "b", "tag": "caret"}, []),
        DocGroup({"tag": "caret", "client": "e"}, []),
        DocChars(" qm3")
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h3"}, [
            DocGroup({"tag": "caret", "client": "f"}, []),
            DocChars(" T  WU")
        ])
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "pre"}, [
            DocChars("Uqgu2llo world!rdh2t\'s up with you?")
        ])
    ])
]

a_del: [
    DelGroup([
        DelWithGroup([
            DelSkip(1), DelWithGroup([])
        ]),
        DelWithGroup([
            DelWithGroup([]),
            DelSkip(2)
        ]),
        DelWithGroup([
            DelSkip(1), DelChars(1), DelSkip(1), DelGroup([]),
            DelChars(1), DelSkip(5)
        ]),
        DelWithGroup([
            DelGroup([]),
            DelSkip(7)
        ])
    ]),
    DelWithGroup([
        DelGroup([]),
        DelWithGroup([]),
        DelSkip(1)
    ])
]
a_add: [
    AddWithGroup([
        AddSkip(1), AddWithGroup([])
    ]),
    AddWithGroup([
        AddWithGroup([]),
        AddSkip(2)
    ]),
    AddWithGroup([
        AddSkip(1), AddGroup({"tag": "caret", "client": "a"}, []),
        AddSkip(1), AddGroup({"client": "c", "tag": "caret"}, []),
        AddChars("Q"), AddSkip(5)
    ]),
    AddWithGroup([
        AddSkip(7)
    ]),
    AddWithGroup([
        AddChars("8"), AddWithGroup([]),
        AddSkip(1), AddChars(" "), AddGroup({"tag": "caret", "client": "b"}, [])
    ])
]

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