diff --git a/TODO b/TODO
index c6a71a34..a309c96b 100644
--- a/TODO
+++ b/TODO
@@ -1,4 +1,8 @@
 * Soon
+** Macros in C++
+There are many macros that should obey api.prefix: YY_CPLUSPLUS, YY_MOVE,
+etc.
+
 ** yyerrok in Java
 And add tests in calc.at, to prepare work for D.