Hi Andrew, I discovered today that the section numbering has changed. Instead of 32P123, it is now 3.2.P.1.2.3, where the (period + number) after the "P" may repeat one or more times. In addition, the "P" may be a "P" or "S". I was trying to adapt your regular expression to the change. I thought the revised expression would be "<3.2.[PS](\.[0-9])@" but the output only shows the first period and number after the letter (P or S). In other words, 3.2.P.1.2.3 only shows 3.2.P.1. Can you tell me what my regular expression should be, please? Sorry for the trouble!