--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/relpipe-data/big-picture/tiles48-relpipe.txt	Thu Aug 01 11:59:39 2019 +0200
@@ -0,0 +1,3 @@
+The tiles come from the Pipepanic game: http://www.users.waitrose.com/~thunor/pipepanic/
+and are licensed under the Free Art Licence: see COPYING-ARTWORK
+They were slightly extended in the Relational pipes project: see tiles48-relpipe.xcf