diff --git a/flake.lock b/flake.lock
deleted file mode 100644
index 0793da5..0000000
--- a/flake.lock
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "nodes": {
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1728538411,
-        "narHash": "sha256-f0SBJz1eZ2yOuKUr5CA9BHULGXVSn6miBuUWdTyhUhU=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "b69de56fac8c2b6f8fd27f2eca01dcda8e0a4221",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "nixpkgs": "nixpkgs"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}
diff --git a/flake.nix b/flake.nix
index 0f4ab32..bb12265 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,6 +18,7 @@
               pkgs.typst
               pkgs.typstyle
               pkgs.tinymist
+              pkgs.agebox
             ];
           };
         };
diff --git a/schule/philosophie/PL_2024-10-01.typ b/schule/philosophie/PL_2024-10-01.typ
index b740a98..0566cf4 100644
--- a/schule/philosophie/PL_2024-10-01.typ
+++ b/schule/philosophie/PL_2024-10-01.typ
@@ -11,7 +11,7 @@
 
 #figure(
   diagram(
-    // debug: true,
+    debug: true,
     node((0,0), [*#underline[Recht und Staatsphilosophie]*], shape: rect, stroke: black),
 
     node((-1,1), "beschreibend"),
diff --git a/shell.nix b/shell.nix
index 2d9175f..cd6b9b6 100644
--- a/shell.nix
+++ b/shell.nix
@@ -5,5 +5,7 @@
      pkgs.typst
      pkgs.typstyle
      pkgs.tinymist
+     pkgs.agebox
+     pkgs.mermaid-cli
    ];
 }
diff --git a/template.typ b/template.typ
index 51fe53a..f2845b6 100644
--- a/template.typ
+++ b/template.typ
@@ -26,6 +26,12 @@
   }
   #set heading(numbering: clean_numbering("A.", "I.", "1.a."))
 
+  // functions for my stuff
+  #let title(body) = {
+    set align(center)
+    [ - #body]
+  }
+
   // #set math.equation(numbering: "(1)", supplement: "equation")
 
   // Customization of text elements