Define an export list in Cardinal.

diff --git a/src/Cardinal.hs b/src/Cardinal.hs
index 031dfc2c9c561ea4b3f5cbea51be284be8cbe123..300c340687fbd86daf9a21035a19207acb936f0b 100644 (file)
--- a/src/Cardinal.hs
+++ b/src/Cardinal.hs
@@ -9,7 +9,17 @@
 --   center of a cube. In addition to those 26 directions, we also
 --   include the interior point and a number of composite types that
 --   allow us to perform arithmetic on directions.
-module Cardinal
+--
+module Cardinal (
+  Cardinal(..),
+  cardinal_properties,
+  cardinal_tests,
+  ccwx,
+  ccwy,
+  ccwz,
+  cwx,
+  cwy,
+  cwz )
 where
 
 import Control.Monad (liftM, liftM2)