diff --git a/Concepts.md b/Concepts.md
index b031ce6..2dadece 100644
--- a/Concepts.md
+++ b/Concepts.md
@@ -240,8 +240,8 @@ The following special variables can be accessed from the command prompt or a spa
 | Variable | Description |
 |:---:| --- |
 | `$nnn` | Hovered file _name_ in current context |
-| `$dn` | Path open in context n [n=1/2/3/4] |
-| `$fn` | File path hovered in context n [n=1/2/3/4] |
+| `$dN` | Path open in context N [N=1/2/3/4] |
+| `$fN` | File path hovered in context N [N=1/2/3/4] |
 
 E.g. to copy the hovered file in context 1 to the directory open in context 3, run `cp "$f1" "$d3"`.