In word processing, track changes is an editing command that is commonly used when you create an original document and make changes and want to keep track of the changes that are made to that original document. It is also a useful tool for collaborating on a document, as it allows multiple users to make revisions without losing the context of the original document. Changes to text and formatting are noted in a number of different ways, depending on the word processing software you use. Tracking changes allows the IRB staff and board members to clearly see what changes, modifications, updates, and additions have been made to study documents.