I want to see the matches in context of the lines above and below the match.
(Not enough reputation to just comment, and I know this topica has 4 years)
After talking with AgentRansack developers:
"Data Discovery -> Show surrounding lines"
So that means they will probably never add it to AgentRansack...
As you can't adjust the software I can only think you can ask the company that made Agent Ransack. As a temporary alternative you can just walk through the lines using your up and down arrow keys, where you can see the lines before and after in the right side of the application.