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→Regular Expressions
* The '''<code>ship</code>''' matches the exact letters s, h, i, p in that order.
Regular expressions are quite powerful, and there are many options. We use the [https://docs.python.org/3/library/re.html Python Regular Expression ] system, and we will document that here. In addition, you can use any Python Regular Expression resource.
''whitespace'' - The term "whitespace" is used below to mean one or more character that you don't see. For example, whitespace includes tabs, spaces, and newlines.
