
doc:   [
    DocGroup({"tag": "p"}, [
        DocGroup({"tag": "caret", "client": "a"}, []),
        DocChars("7fkin h c3 Dworl")
    ]),
    DocGroup({"tag": "h3"}, [
        DocGroup({"tag": "caret", "client": "b"}, []),
        DocChars("W"), DocGroup({"client": "c", "tag": "caret"}, []),
        DocChars("hat\'s up with you?")
    ])
]

a_del: [
    DelGroup([
        DelGroup([]),
        DelChars(1), DelSkip(15)
    ]),
    DelWithGroup([])
]
a_add: [
    AddGroup({"tag": "p"}, [
        AddChars("6"), AddGroup({"tag": "caret", "client": "a"}, [])
    ]),
    AddGroup({"tag": "p"}, [
        AddChars(" o5"), AddSkip(15)
    ]),
    AddWithGroup([
        AddChars("6")
    ])
]

b_del: [
    DelWithGroup([
        DelWithGroup([]),
        DelSkip(16)
    ]),
    DelGroup([
        DelGroup([]),
        DelChars(1), DelWithGroup([]),
        DelSkip(1), DelChars(1), DelSkip(16)
    ])
]
b_add: [
    AddGroup({"tag": "bullet"}, [
        AddWithGroup([
            AddChars("s"), AddWithGroup([]),
            AddSkip(16)
        ])
    ]),
    AddGroup({"tag": "h1"}, [
        AddGroup({"tag": "caret", "client": "b"}, []),
        AddChars("0 "), AddWithGroup([]),
        AddSkip(1), AddChars("I"), AddSkip(16)
    ])
]
