The discussion of particular software products is not meant to suggest that other comparable products are in any way inferior.
Many programs offer the possibility of working with regular expressions.
We are using BBEdit Lite here for illustrative purposes and because it's freeware. The product names mentioned are registered trademarks of their respective companies. Defining a string of symbols in this way is necessary for a variety of tasks, for example, for searching a textual database for some specific information. If not, regular expressions are nothing to be afraid of. Let us look at a simple example.