The pattern selector makes it easy to use a regular expression search in a more user-friendly manner.
Unlike the Regular expression selector, It doesn`t require deep knowledge of regular expressions.
It essentially looks for a prefix and a suffix in the PDF and extracts everything in between. Either
"prefix" should be filled in. When only one is present, it extracts everything between the start of a line and the suffix, or between the prefix and the end of a line.
You can additionally specify a type of data to be found. For this purpose you can use one of the predefined type extractors.
This is how you can extract a price from the following string
Please see the Extracting data from PDF invoices tutorial to get more insight into how this works.
Output data format:
List of selectors