In aclassifiedintelligencereport, the point at which theconfidential version of a report ends (often marked by a series of dashes), and asanitized version suitable for sharing with the public begins.
1994,Joint Security Commission, Redefining Security: A Report to the Secretary of Defense and the Director of Central Intelligence. Unclassified.,page14:
Where source-revealing information must necessarily be included, the Commission strongly recommends the use of atear line. Those who need to know how the information was derived will have access to the information above thetear line, marked SECRET COMPARTMENTED ACCESS. Those who need to act on the information, but do not need to know the source of the information, will receive the generally protected information below thetear line, marked SECRET.