
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h3"}, [
            DocChars("g  C A"), DocGroup({"client": "d", "tag": "caret"}, [])
        ]),
        DocGroup({"tag": "p"}, [
            DocChars(" 5"), DocGroup({"client": "g", "tag": "caret"}, []),
            DocGroup({"client": "a", "tag": "caret"}, []),
            DocChars(" ")
        ])
    ]),
    DocGroup({"tag": "h3"}, []),
    DocGroup({"tag": "p"}, [
        DocGroup({"client": "b", "tag": "caret"}, []),
        DocChars("P U")
    ]),
    DocGroup({"tag": "p"}, [
        DocChars("JX JbaJk")
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "pre"}, [
            DocChars(" N O")
        ]),
        DocGroup({"tag": "p"}, [
            DocGroup({"client": "f", "tag": "caret"}, []),
            DocGroup({"tag": "caret", "client": "e"}, []),
            DocChars("d")
        ]),
        DocGroup({"tag": "p"}, [
            DocChars("J")
        ]),
        DocGroup({"tag": "h3"}, [
            DocChars("c u ")
        ])
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "pre"}, [
            DocChars("YUF v"), DocGroup({"tag": "caret", "client": "c"}, []),
            DocChars(" Qr5VuL477ello wWhat\'s up with you?")
        ])
    ])
]

a_del: [
    DelGroup([
        DelWithGroup([
            DelSkip(6), DelWithGroup([])
        ]),
        DelWithGroup([
            DelChars(2), DelWithGroup([]),
            DelGroup([]),
            DelSkip(1)
        ])
    ]),
    DelGroup([]),
    DelGroup([
        DelGroup([]),
        DelSkip(3)
    ])
]
a_add: [
    AddWithGroup([
        AddSkip(6), AddWithGroup([])
    ]),
    AddWithGroup([
        AddGroup({"tag": "caret", "client": "b"}, []),
        AddWithGroup([]),
        AddSkip(1), AddChars("S"), AddGroup({"client": "a", "tag": "caret"}, [])
    ]),
    AddGroup({"tag": "h3"}, [
        AddSkip(3)
    ])
]

b_del: [
    DelWithGroup([
        DelWithGroup([
            DelSkip(5), DelChars(1), DelGroup([])
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddWithGroup([
            AddGroup({"tag": "caret", "client": "d"}, []),
            AddSkip(5), AddChars(" ")
        ])
    ])
]
