Blackline and Redline are two important terms in the business world. Blackline refers to any document that is signed, sealed, and delivered to a customer or client as a final agreement. Redline, on the other hand, refers to a working document that can be used to compare changes between different versions of a finalized agreement. Essentially, it’s a way to keep track of how the agreement changed over time. When you ‘redline’ an agreement, you draw lines through each change and make notes about what was added or removed from the document. This makes it easy to identify where revisions have been made and see how the agreement looked before and after editing. Blackline and Redline – two essential elements in the world of business.