Regular Expressions - Regular Expressions: Anchors

This topic is for the [Regular Expressions - Anchors][] exercise in the [Regular Expressions][] trail. Post any questions, corrections, or pointers you have to share with other Upcase subscribers.
[Regular Expressions - Anchors]: https://exercises.upcase.com/exercises/regular-expressions-anchors
[Regular Expressions]: https://thoughtbot.com/upcase/regular-expressions