
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h3"}, [
            DocChars("7 ")
        ])
    ]),
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "h3"}, [
            DocChars("pH"), DocGroup({"client": "a", "tag": "caret"}, []),
            DocChars(" JK"), DocGroup({"tag": "caret", "client": "b"}, []),
            DocChars("d")
        ]),
        DocGroup({"tag": "h3"}, [
            DocGroup({"tag": "caret", "client": "c"}, []),
            DocChars("2K51hyBX  l5ak A")
        ])
    ]),
    DocGroup({"tag": "pre"}, [
        DocChars("bVC \'5 up with you?")
    ])
]

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

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