diff --git a/README.md b/README.md
index 8303488..09862d9 100644
--- a/README.md
+++ b/README.md
@@ -224,6 +224,10 @@ Each line format is `name,type,path,size,indexed_at,maccess,md5`.
 * **indexed_at**: when this entry was indexed
 * **maccess**: the entry modification date/time
 * **md5**: the entry checksum (if any)
+* **nbfiles**: the number of children (empty for not storage or directory nodes)
+* **free_space**: free space (empty for not storage nodes)
+* **total_space**: total space (empty for not storage nodes)
+* **meta**: meta information (empty for not storage nodes)
 
 # Examples