const DIAGRAM_1_A = 
  '+---------+-------------+\n' +
  '| Classes | Metaclasses |\n' +
  '+---------+-------------|\n' +
  '| MyClass > MyMetaClass |\n';

const DIAGRAM_1_B =
  '┏━━━━━━━━━┯━━━━━━━━━━━━━┓\n' +
  '┃ Classes │ Metaclasses ┃\n' +
  '┠─────────┼─────────────┨\n' +
  '┃ MyClass → MyMetaClass ┃\n' +
  '┃         │     ↓       ┃\n' +
  '┃  object ───→ type ←╮  ┃\n' +
  '┃         │    ↑ ╰───╯  ┃\n' +
  '┃   str ───────╯        ┃\n' +
  '┗━━━━━━━━━┷━━━━━━━━━━━━━┛\n';

const DIAGRAM_2_A =
  '+---------+-------------+\n' +
  '| Classes | Metaclasses |\n' +
  '+---------+-------------|\n' +
  '| MyClass | MyMetaClass |\n';

const DIAGRAM_2_B =
  '┏━━━━━━━━━┯━━━━━━━━━━━━━┓\n' +
  '┃ Classes │ Metaclasses ┃\n' +
  '┠─────────┼─────────────┨\n' +
  '┃ MyClass │ MyMetaClass ┃\n' +
  '┃    ↓    │     ↓       ┃\n' +
  '┃  object ←─── type     ┃\n' +
  '┃    ↑    │             ┃\n' +
  '┃   str   │             ┃\n' +
  '┗━━━━━━━━━┷━━━━━━━━━━━━━┛\n';

const DIAGRAM_3_A =
  '+------------------+----------+------------+----------+\n' +
  '|                  | Sequence | Collection | Iterable |\n' +
  '+------------------+----------+------------+----------+\n';

const DIAGRAM_3_B =
  '┏━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━━━━━┓\n' +
  '┃                  │ Sequence │ Collection │ Iterable ┃\n' +
  '┠──────────────────┼──────────┼────────────┼──────────┨\n' +
  '┃ list, range, str │    ✓     │     ✓      │    ✓     ┃\n' +
  '┃ dict, set        │          │     ✓      │    ✓     ┃\n' +
  '┃ iter             │          │            │    ✓     ┃\n' +
  '┗━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━━━━━┛\n';

const DIAGRAM_4_A =
  '+--------------------+----------+----------+------+---------+--------+\n' +
  '|                    | Integral | Rational | Real | Complex | Number |\n' +
  '+--------------------+----------+----------+------+---------+--------+\n';

const DIAGRAM_4_B =
  '┏━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━┯━━━━━━━━━┯━━━━━━━━┓\n' +
  '┃                    │ Integral │ Rational │ Real │ Complex │ Number ┃\n' +
  '┠────────────────────┼──────────┼──────────┼──────┼─────────┼────────┨\n' +
  '┃ int                │    ✓     │    ✓     │  ✓   │    ✓    │   ✓    ┃\n' +
  '┃ fractions.Fraction │          │    ✓     │  ✓   │    ✓    │   ✓    ┃\n' +
  '┃ float              │          │          │  ✓   │    ✓    │   ✓    ┃\n' +
  '┃ complex            │          │          │      │    ✓    │   ✓    ┃\n' +
  '┗━━━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━┷━━━━━━━━━┷━━━━━━━━┛\n';

const DIAGRAM_5_A =
  "+----------------+----------------+---------------+----------------+-----------------+\n" +
  "|                |    {<float>}   |  {<float>:f}  |   {<float>:e}  |   {<float>:%}   |\n" +
  "+----------------+----------------+---------------+----------------+-----------------+\n";

const DIAGRAM_5_B =
  "┏━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━┓\n" +
  "┃                │    {&lt;float&gt;}   │  {&lt;float&gt;:f}  │   {&lt;float&gt;:e}  │   {&lt;float&gt;:%}   ┃\n" +
  "┠────────────────┼────────────────┼───────────────┼────────────────┼─────────────────┨\n" +
  "┃    0.000056789 │   '5.6789e-05' │    '0.000057' │ '5.678900e-05' │     '0.005679%' ┃\n" +
  "┃    0.00056789  │   '0.00056789' │    '0.000568' │ '5.678900e-04' │     '0.056789%' ┃\n" +
  "┃    0.0056789   │   '0.0056789'  │    '0.005679' │ '5.678900e-03' │     '0.567890%' ┃\n" +
  "┃    0.056789    │   '0.056789'   │    '0.056789' │ '5.678900e-02' │     '5.678900%' ┃\n" +
  "┃    0.56789     │   '0.56789'    │    '0.567890' │ '5.678900e-01' │    '56.789000%' ┃\n" +
  "┃    5.6789      │   '5.6789'     │    '5.678900' │ '5.678900e+00' │   '567.890000%' ┃\n" +
  "┃   56.789       │  '56.789'      │   '56.789000' │ '5.678900e+01' │  '5678.900000%' ┃\n" +
  "┃  567.89        │ '567.89'       │  '567.890000' │ '5.678900e+02' │ '56789.000000%' ┃\n" +
  "┗━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━┛\n";

const DIAGRAM_6_A =
  "+----------------+----------------+---------------+----------------+-----------------+\n" +
  "|                |  {<float>:.2}  | {<float>:.2f} |  {<float>:.2e} |  {<float>:.2%}  |\n" +
  "+----------------+----------------+---------------+----------------+-----------------+\n";

const DIAGRAM_6_B =
  "┏━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━┓\n" +
  "┃                │  {&lt;float&gt;:.2}  │ {&lt;float&gt;:.2f} │  {&lt;float&gt;:.2e} │  {&lt;float&gt;:.2%}  ┃\n" +
  "┠────────────────┼────────────────┼───────────────┼────────────────┼─────────────────┨\n" +
  "┃    0.000056789 │   '5.7e-05'    │      '0.00'   │   '5.68e-05'   │       '0.01%'   ┃\n" +
  "┃    0.00056789  │   '0.00057'    │      '0.00'   │   '5.68e-04'   │       '0.06%'   ┃\n" +
  "┃    0.0056789   │   '0.0057'     │      '0.01'   │   '5.68e-03'   │       '0.57%'   ┃\n" +
  "┃    0.056789    │   '0.057'      │      '0.06'   │   '5.68e-02'   │       '5.68%'   ┃\n" +
  "┃    0.56789     │   '0.57'       │      '0.57'   │   '5.68e-01'   │      '56.79%'   ┃\n" +
  "┃    5.6789      │   '5.7'        │      '5.68'   │   '5.68e+00'   │     '567.89%'   ┃\n" +
  "┃   56.789       │   '5.7e+01'    │     '56.79'   │   '5.68e+01'   │    '5678.90%'   ┃\n" +
  "┃  567.89        │   '5.7e+02'    │    '567.89'   │   '5.68e+02'   │   '56789.00%'   ┃\n" +
  "┗━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━┷━━━━━━━━━━━━━━━━━┛\n";

const DIAGRAM_7_A =
  '+------------+----------+------------+----------+--------------+\n' +
  '|            | Iterable | Collection | Sequence | abc.Sequence |\n' +
  '+------------+----------+------------+----------+--------------+\n';

const DIAGRAM_7_B =
  '┏━━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━━━━━┯━━━━━━━━━━┯━━━━━━━━━━━━━━┓\n' +
  '┃            │ Iterable │ Collection │ Sequence │ abc.Sequence ┃\n' +
  '┠────────────┼──────────┼────────────┼──────────┼──────────────┨\n' +
  '┃ iter()     │    !     │     !      │    ✓     │      ✓       ┃\n' +
  '┃ contains() │    ✓     │     ✓      │    ✓     │      ✓       ┃\n' +
  '┃ len()      │          │     !      │    !     │      !       ┃\n' +
  '┃ getitem()  │          │            │    !     │      !       ┃\n' +
  '┃ reversed() │          │            │    ✓     │      ✓       ┃\n' +
  '┃ index()    │          │            │          │      ✓       ┃\n' +
  '┃ count()    │          │            │          │      ✓       ┃\n' +
  '┗━━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━━━━━┷━━━━━━━━━━┷━━━━━━━━━━━━━━┛\n';

const DIAGRAM_8_A =
  'BaseException\n' +
  ' +-- SystemExit';

const DIAGRAM_8_B =
  "BaseException\n" +
  " ├── SystemExit                   <span class='hljs-comment'># Raised by the sys.exit() function.</span>\n" +
  " ├── KeyboardInterrupt            <span class='hljs-comment'># Raised when the user hits the interrupt key.</span>\n" +
  " └── Exception                    <span class='hljs-comment'># User-defined exceptions should be derived from this class.</span>\n" +
  "      ├── StopIteration           <span class='hljs-comment'># Raised by next() when run on an empty iterator.</span>\n" +
  "      ├── ArithmeticError         <span class='hljs-comment'># Base class for arithmetic errors.</span>\n" +
  "      │    └── ZeroDivisionError  <span class='hljs-comment'># Raised when dividing by zero.</span>\n" +
  "      ├── AttributeError          <span class='hljs-comment'># Raised when an attribute is missing.</span>\n" +
  "      ├── EOFError                <span class='hljs-comment'># Raised by input() when it hits end-of-file condition.</span>\n" +
  "      ├── LookupError             <span class='hljs-comment'># Raised when a look-up on sequence or dict fails.</span>\n" +
  "      │    ├── IndexError         <span class='hljs-comment'># Raised when a sequence index is out of range.</span>\n" +
  "      │    └── KeyError           <span class='hljs-comment'># Raised when a dictionary key is not found.</span>\n" +
  "      ├── NameError               <span class='hljs-comment'># Raised when a variable name is not found.</span>\n" +
  "      ├── OSError                 <span class='hljs-comment'># Failures such as “file not found” or “disk full”.</span>\n" +
  "      │    └── FileNotFoundError  <span class='hljs-comment'># When a file or directory is requested but doesn't exist.</span>\n" +
  "      ├── RuntimeError            <span class='hljs-comment'># Raised by errors that don't fall in other categories.</span>\n" +
  "      │    └── RecursionError     <span class='hljs-comment'># Raised when the the maximum recursion depth is exceeded.</span>\n" +
  "      ├── TypeError               <span class='hljs-comment'># Raised when an argument is of wrong type.</span>\n" +
  "      └── ValueError              <span class='hljs-comment'># When an argument is of right type but inappropriate value.</span>\n" +
  "           └── UnicodeError       <span class='hljs-comment'># Raised when encoding/decoding strings from/to bytes fails.</span>\n";

const DIAGRAM_9_A =
  '+------------------+-----------+-----------+--------------+\n' +
  '|                  |   excel   | excel_tab | unix_dialect |\n' +
  '+------------------+-----------+-----------+--------------+\n';

const DIAGRAM_9_B =
  "┏━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━┯━━━━━━━━━━━━━━┓\n" +
  "┃                  │   excel   │ excel_tab │ unix_dialect ┃\n" +
  "┠──────────────────┼───────────┼───────────┼──────────────┨\n" +
  "┃ delimiter        │      ','  │     '\\t'  │       ','    ┃\n" +
  "┃ quotechar        │      '\"'  │      '\"'  │       '\"'    ┃\n" +
  "┃ doublequote      │     True  │     True  │      True    ┃\n" +
  "┃ skipinitialspace │    False  │    False  │     False    ┃\n" +
  "┃ lineterminator   │   '\\r\\n'  │   '\\r\\n'  │      '\\n'    ┃\n" +
  "┃ quoting          │        0  │        0  │         1    ┃\n" +
  "┃ escapechar       │     None  │     None  │      None    ┃\n" +
  "┗━━━━━━━━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━┷━━━━━━━━━━━━━━┛\n";


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