Merge "libs.mk: set LC_ALL=C w/egrep invocations"
diff --git a/vpxenc.c b/vpxenc.c
index 8c92f23..5d7546e 100644
--- a/vpxenc.c
+++ b/vpxenc.c
@@ -503,6 +503,9 @@
                                        &target_level,
                                        &row_mt,
                                        &disable_loopfilter,
+// NOTE: The entries above have a corresponding entry in vp9_arg_ctrl_map. The
+// entries below do not have a corresponding entry in vp9_arg_ctrl_map. They
+// must be listed at the end of vp9_args.
 #if CONFIG_VP9_HIGHBITDEPTH
                                        &bitdeptharg,
                                        &inbitdeptharg,