diff --git a/dist/elhtml_impl.c b/dist/elhtml_impl.c
index f58dbfd..95bd813 100644
--- a/dist/elhtml_impl.c
+++ b/dist/elhtml_impl.c
@@ -1,3 +1,4 @@
+// elhtml_impl.c — El HTML element stubs.
 #include <stdint.h>
 #include <stdlib.h>
 #include "el_runtime.h"