---
-# A note on testing
-
-Testing's easier if everything returns a meaningful value
-
-Saves having to look up different values after performing each operation
-
-`__init__` can't return a value (restriction of Python)
-
-```python
-if __name__ == "__main__":
- import doctest
- doctest.testmod(extraglobs={'pe': PocketEnigma(1, 'a')})
-```
-
-`pe` is now available in all tests.
-
----
-
# Data structures
What's a convenient representation of the wheel
---
+# A note on testing
+
+Testing's easier if everything returns a meaningful value
+
+Saves having to look up different values after performing each operation
+
+`__init__` can't return a value (restriction of Python)
+
+```python
+if __name__ == "__main__":
+ import doctest
+ doctest.testmod(extraglobs={'pe': PocketEnigma(1, 'a')})
+```
+
+`pe` is now available in all tests.
+
+---
+
# Looking up the enciphered version of a letter
*Not* advancing the wheel before