diff --git a/README.md b/README.md
index fcfc78a..52d6a9c 100644
--- a/README.md
+++ b/README.md
@@ -24,4 +24,8 @@ für informationen über temporary filesystems:
 
 https://search.nixos.org/options?channel=22.11&show=boot.tmpOnTmpfsSize&from=0&size=50&sort=relevance&type=packages&query=tmpfs
 
-https://github.com/NixOS/nixpkgs/blob/nixos-22.11/nixos/modules/system/boot/tmp.nix 
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+https://github.com/NixOS/nixpkgs/blob/nixos-22.11/nixos/modules/system/boot/tmp.nix 
+
+andere nützliche links:
+
+https://nixos.org/manual/nixos/stable/index.html#sec-writing-modules
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