What does a redaction typically hide in a document?

A redaction typically hides confidential or privileged information in a document to protect sensitive data from unauthorized disclosure. This practice is essential in legal, medical, or any official documents that may contain personal information, trade secrets, or other protected content that should not be made public. Redaction involves obscuring text or information, often with black bars or deleted marks, to ensure that the underlying content cannot be viewed or accessed while still allowing the document to be shared or utilized for other purposes.

The other options, while they contribute to document management, do not specifically define the primary purpose of redaction. Hiding images, outdated information, or formatting styles does not serve the same critical function of protecting sensitive information as redaction does.