diff --git a/prezentace.md b/prezentace.md
index 0cacd43..99f192e 100644
--- a/prezentace.md
+++ b/prezentace.md
@@ -26,27 +26,23 @@ footer: "Albert Vala, Filip Kohout, Nix flakes & Nix command"
 
 # Nix flakes & Nix command
 ---
-# nix command
+# Nix Command
 * Nove nix cli
----
-# Proc zmena?
-* Protoze treba nix-shell se nemel pouzivat na nix-shell -p
 * Flake support
 ---
 # Porovnani
 ```shell
-nix-shell -p cowsay | nix shell nixpkgs#cowsay
+nix-shell -p cowsay #Stare
+nix shell nixpkgs#cowsay #Nove
+nix run nixpkgs#cowsay #Nove
 ```
-nix eval
-nix why-depends
-
 ---
 # Flakes
-## Why tho?
+## Proc?
 * Lockfiles.
 * Flake inputs
----
-# Na co flaku pouzit?
+## Na co?
+- Cokoliv.
 ---
 # Jak pouzit flakes na system configuraci?
 * Flake je jen cast zbytek je v normalnich nix filech