How to use Regular Expressions

If you want search for every string that starts with x, ht or u and ends with ml, you can write a regular expression like this: (x|ht|u)ml. Insert this expression in the search editor, click OK, and enable regular expressions by toggling the Regular Expression button. Please note that using regular expressions lets you to make very complicated searches, but the cost could be a performance degradation. Regular expression can be very tricky, and it is often the case that if you want to solve a problem with a regular expression, you have two problems.