diff --git a/Usage.md b/Usage.md
index 056b744..f35a245 100644
--- a/Usage.md
+++ b/Usage.md
@@ -310,6 +310,8 @@ Note:
 | `R` | reverse sorted |
 | `du` | disk usage |
 | `au` | apparent disk usage |
+| `->` | symbolic link target |
+| `n-n` | num hard links - inode number |
 
 ## File size