1 files changed, 13 insertions, 1 deletions
diff --git a/LICENCE b/LICENCE
index f305033..8422bd9 100644
--- a/LICENCE
+++ b/LICENCE
@@ -20,7 +20,19 @@ restrictions:
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
 2. The origin of this software must not be misrepresented, either by
-   explicit claim or by omission.
+   explicit claim or by omission. In practice, this means you must put
+   a sentence like this
+
+     Regular expression support is provided by the PCRE library package,
+     which is open source software, copyright by the University of
+     Cambridge.
+
+   somewhere reasonably visible in your documentation and in any relevant
+   files. A reference to the ftp site for the source should also be given
+
+     ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/
+
+   in the documentation.
 
 3. Altered versions must be plainly marked as such, and must not be
    misrepresented as being the original software.