diff --git a/TODO.markdown b/TODO.markdown
index 852555ab..b101542c 100644
--- a/TODO.markdown
+++ b/TODO.markdown
@@ -2,3 +2,5 @@
 * Rationale (how it's different from mustache, and why)
 
 * Refactor blocks/inverted sections so shared code isn't copied and pasted
+
+* Figure out how to allow detection of first/last/iteration when enumerating over arrays.