diff --git a/Sharing-Collections.md b/Sharing-Collections.md
index d77d597..54d6751 100644
--- a/Sharing-Collections.md
+++ b/Sharing-Collections.md
@@ -61,7 +61,7 @@ Note: `*/.Radicale*` files/directories are not shown here
         │ └─[l] sharedaddressbook2 -> ../../collection-shared/group2/sharedaddressbook2 (ro)
 ```
 
-Related `rights` extension for read-only:
+Related `rights` extension for read-only "r":
 
 ```
 [group2-sharedcalendar2-ro]
@@ -75,7 +75,7 @@ collection: {user}/sharedaddressbook2(/.+)?
 permissions: r
 ```
 
-Related `rights` extension for read-write but forbid-to-delete-collection-itself:
+Related `rights` extension for read-write "rw" but forbid-to-delete-collection-itself "d":
 
 ```
 [group1-sharedcalendar1-rw]