diff --git a/free.md b/free.md
index 7eb76424f..c9b5538dd 100644
--- a/free.md
+++ b/free.md
@@ -1,8 +1,10 @@
 # Free
 
-- [[available]] to [[all]].
+- A [[concept]].
+  - [[available]] to [[all]].
 - [[pull]] [[open source]]
 - [[pull]] [[open ethics]]
+- [[pull]] [[solved]]
 
 
 [//begin]: # "Autogenerated link references for markdown compatibility"