--- a/TODO	Sun Dec 09 15:01:51 2007 +0100
+++ b/TODO	Sun Dec 09 23:10:58 2007 +0100
@@ -13,6 +13,7 @@
  * update Python binding: Camera, new classes
  * namespace
  * stochastic oversampling
+ * absorbtion of refracted rays in dense materials (can be computed using shape distance and some 'absorbance' constant)
 
 New Classes?
 ============