Agencies can waive the requirement to re-mark legacy information with the new CUI markings while the CUI is in their control. The CUI Program does not require the agencies to re-mark unless reusing and sharing the information with others outside of their agency. In addition, because the CUI regulation also contains flexibility in handling such things as existing on-line databases with numerous PDF documents, a flash screen may suffice to alert users that a law, Federal regulation, or Government-wide policy requires safeguarding and dissemination controls.