<Tr> <Td> "Chatham House Rule" </Td> <Td> Named after Chatham House (the Royal Institute of International Affairs), which introduced the rule in 1927: "When a meeting, or part thereof, is held under the Chatham House Rule, participants are free to use the information received, but neither the identity nor the affiliation of the speaker (s), nor that of any other participant, may be revealed". </Td> </Tr> <Tr> <Td> "Lobby terms": </Td> <Td> In the UK accredited journalists are allowed in to the otherwise restricted Members' Lobby on the basis that information received there is never attributed and events there are not reported . "Lobby terms" are agreed to extend this arrangement to cover discussions that take place elsewhere . </Td> </Tr> <Tr> <Td> "Not for attribution" </Td> <Td> The comments may be quoted directly, but the source may only be identified in general terms (e.g., "a government insider"). In practice such general descriptions may be agreed with the interviewee . </Td> </Tr> <Tr> <Td> "On background" </Td> <Td> The thrust of the briefing may be reported (and the source characterized in general terms as above) but direct quotes may not be used . </Td> </Tr>

On the record off the record on background