From P2P Foundation
= used in the UK for public sector information
"Click-use is the term used to describe our online licences for the re-use of:
* Crown copyright information * Public Sector Information * Parliamentary copyright information
There are three Click-Use Licences. These are:
* the PSI Licence - formerly known as the Core Licence. It covers core Crown copyright information and Public Sector Information. * the Valued Added Licence - this covers value added Crown copyright information. * the Parliamentary Licence - this covers Parliamentary copyright information"