You can search text for as little as a specific character or for long, complex phrases. Search terms and replacement text can include inbuilt or custom fields, and you can specify formatting that must be applied to existing text or that you wish to apply to its replacement. You can even search for patterns in text by using regular expressions.
Regular expressions extend the capabilities and power of the Find and Replace function beyond searching for simple text strings. They are widely used across the word-processing and DTP community, with a multitude of expressions available. As a result, listing regular expressions and their syntax is beyond the scope of Affinity Publisher Help. Please use Internet resources to research and develop your own regular expressions including www.regular-expressions.info and regexone.com.