Regex Search to Collect Lines Before and After String

Use this Regex search:

((.*\r\n){2})discovery

When you want to extract two lines before the string 'discovery'. The regular expression can be varied to collect X number of lines after the string.

discovery((.*\r\n){X})

See these screen grabs showing how to run the Regex search using PowerGrep, which was discussed in the Tip of the Night for October 15, 2015 and the Tip of the Night for June 22, 2015.