How do I search for files via Regular Expressions?

Question / Problem

How do I search for files via Regular Expressions?

Answer / Solution

If you want to use Regular Expressions to search for files, you can use the UltraSearch search syntax, by preceding the search term with a tilde ("~"), for example:
name: ~(?=.*help)|(?=.*online)
to search for all files that contain the word "help" or "online".