--- /dev/null
+
+In this directory, we test the integrity of the CQL-Java tools as
+follows:
+
+* Generate a random tree with CQLGenerate
+* Take a copy
+* Canonicalise it with CQLparser -c.
+* Compare the before-and-after versions.
+
+Since the CQLGenerate output is in canonical form anyway, the
+before-and-after versions should be identical. This process exercises
+the comprehensiveness and bullet-proofing of the parser, as well as
+the accuracy of the rendering.
+