add validation

diff --git a/TODO b/TODO
index c27899f..95ccdec 100644 (file)
--- a/TODO
+++ b/TODO
@@ -25,3 +25,7 @@
 
 * Deletion
   * Need to come up with a sane, consistent principal deletion policy.
+
+* Validation
+  * Need to come up with a policy (truncation? fault?) for dealing with
+    variable length strings.