diff --git a/README.md b/README.md
index 4ed099d..7f43d62 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,9 @@ In either case, the challenge is taming an otherwise automatic system.
 Objects move on their own. You only control the ~~pencil~~ pen.
 
 # TODO:
-* swap pencil out for pen
+* swap pencil out for pen - consistent with the ink metaphor
+* add a snap effect when within snap distance confines
+* filter all non-colliding points at beginning and end of gesture
 * add grouping code
 * multipliers for combos
 * penalties for not-combos