Extractor is used for extracting columns from large Google Sheets for use with specific applications or tasks.
This could be if a large playbook for a conference has been created and you want to create a simple online version which is specific for the camera operators so they can focus on what is necessary for their tasks. The online version will be updated when refreshed ensuring to get the newest information as the show goes on.
The browser application use parameters in the URL for selecting columns and ID for the master sheet.