diff --git a/.gitmodules b/.gitmodules
index 3ea949c7..e69de29b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "Projects/lean4web-tools"]
-	path = Projects/lean4web-tools
-	url = https://github.com/hhu-adam/lean4web-tools.git
diff --git a/Projects/README.md b/Projects/README.md
index 58a55dc7..59ed7300 100644
--- a/Projects/README.md
+++ b/Projects/README.md
@@ -1,32 +1,40 @@
 # Adding Projects
 
-To add a new project, one needs to add a lean project here.
-
-Projects can be any Lean projects.
-
-1. You can build the lean project manually. For automatic updates, your project should include a file `ProjectName/build.sh` which can be
-  executed to build the project. See [lean4web-tools](https://github.com/hhu-adam/lean4web-tools) for an example.
-2. Your project should add the dependency
-    ```lean
-    require webeditor from git
-        "https://github.com/hhu-adam/lean4web-tools.git" @ "main"
-    ```
-    in its `lakefile.lean`. This package adds some simple tools like `#package_version`.
-3. For a project to appear in the settings, you need to add it to `config.json`:
-  add a new entry `{folder: "_", name: "_"}` to `projects`, where "folder" is the
-  folder name inside `Projects/` and "name" is the free-text display name.
-
-* Optionally, you can also specify examples in the `config.json` each of these
-    examples will appear under "Examples" in the menu. A full project entry would then
-    look as follows:
-    ```
-    { "folder": "folder name inside `Projects/`",
-      "name": "My Custom Lean Demo",
-      "examples": [
-        { "file": "path/inside/the/lean/package.lean",
-          "name": "My Cool Example"},
-        ...
-      ]
-    }
-    ```
-* Compare to the entry for the `mathlib-demo` project.
+To add new projects, add any Lean project in the folder `Projects/`, e.g. `Projects/my-cool-project/`.
+You can either build your Lean project manually or you include a script
+`Projects/my-cool-project/build.sh` for automatic builds.
+Usually a build script looks like this:
+
+```
+#!/usr/bin/env bash
+
+# Operate in the directory where this file is located
+cd $(dirname $0)
+
+# add code here to update the project correctly
+
+lake build
+```
+
+A project added this way can then be accessed online with `https://your.url.com/#project=my-cool-project`.
+For the project to appear in the Settings, you need to update `client/config/config.json` by adding
+a new entry `{folder: "my-cool-project", name: "My Cool Project"}` to `projects`; here `folder` is the
+folder name inside `Projects/` and `name` is the free-text display name.
+
+If you want to add Examples, you should add them as valid Lean files to your project and then expand
+the config entry of your project in `config.json` as follows:
+
+```
+{ "folder": "my-cool-project`",
+  "name": "My Cool Project",
+  "examples": [
+    { "file": "MyCustomProject/Demo1.lean",
+      "name": "My Cool Example" }
+  ]
+}
+```
+
+This will add an entry `My Cool Example` to the Example menu which loads
+the file from `Projects/my-cool-project/MyCustomProject/Demo1.lean`.
+
+You might want to look at the provided `mathlib-demo` project for comparison.
diff --git a/Projects/lean4web-tools b/Projects/lean4web-tools
deleted file mode 160000
index c6997031..00000000
--- a/Projects/lean4web-tools
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit c69970315e29af067b8518995175f6195d4a8f6b
diff --git a/Projects/mathlib-demo/lakefile.toml b/Projects/mathlib-demo/lakefile.toml
index cdb7b388..7f8b742d 100644
--- a/Projects/mathlib-demo/lakefile.toml
+++ b/Projects/mathlib-demo/lakefile.toml
@@ -6,10 +6,5 @@ name = "mathlib"
 git = "https://github.com/leanprover-community/mathlib4"
 rev = "master"
 
-[[require]]
-name = "webeditor"
-git = "https://github.com/hhu-adam/lean4web-tools.git"
-rev = "main"
-
 [[lean_lib]]
 name = "MathlibLatest"
diff --git a/Projects/stable/.gitignore b/Projects/stable/.gitignore
new file mode 100644
index 00000000..bfb30ec8
--- /dev/null
+++ b/Projects/stable/.gitignore
@@ -0,0 +1 @@
+/.lake
diff --git a/Projects/stable/Stable.lean b/Projects/stable/Stable.lean
new file mode 100644
index 00000000..e69de29b
diff --git a/Projects/stable/build.sh b/Projects/stable/build.sh
new file mode 100755
index 00000000..34451d01
--- /dev/null
+++ b/Projects/stable/build.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+# Operate in the directory where this file is located
+cd $(dirname $0)
+
+lake update -R
+lake build
diff --git a/Projects/stable/lake-manifest.json b/Projects/stable/lake-manifest.json
new file mode 100644
index 00000000..9de15084
--- /dev/null
+++ b/Projects/stable/lake-manifest.json
@@ -0,0 +1,5 @@
+{"version": 7,
+ "packagesDir": ".lake/packages",
+ "packages": [],
+ "name": "stable",
+ "lakeDir": ".lake"}
diff --git a/Projects/stable/lakefile.lean b/Projects/stable/lakefile.lean
new file mode 100644
index 00000000..30239663
--- /dev/null
+++ b/Projects/stable/lakefile.lean
@@ -0,0 +1,9 @@
+import Lake
+open Lake DSL
+
+package «stable» where
+  -- add package configuration options here
+
+@[default_target]
+lean_lib «Stable» where
+  -- add library configuration options here
diff --git a/Projects/stable/lean-toolchain b/Projects/stable/lean-toolchain
new file mode 100644
index 00000000..7638861c
--- /dev/null
+++ b/Projects/stable/lean-toolchain
@@ -0,0 +1 @@
+leanprover/lean4:stable
diff --git a/client/src/Popups/Tools.tsx b/client/src/Popups/Tools.tsx
index bb01c4f5..51e2a0d8 100644
--- a/client/src/Popups/Tools.tsx
+++ b/client/src/Popups/Tools.tsx
@@ -101,6 +101,12 @@ const ToolsPopup: React.FC<{
         }
       </tr>)}
     </table>
+    <h2>Tools</h2>
+    <p>
+      To see the actual Lean version implied by the toolchain above, the following can be pasted
+      into the editor:
+    </p>
+    <pre><code>#eval Lean.versionString</code></pre>
   </Popup>
 }
 
diff --git a/client/src/config/config.tsx b/client/src/config/config.tsx
index 970756b0..7785477a 100644
--- a/client/src/config/config.tsx
+++ b/client/src/config/config.tsx
@@ -11,14 +11,8 @@ const lean4webConfig = {
           "name": "Ring" },
         { "file": "MathlibLatest/Rational.lean",
           "name": "Rational" }]},
-    { "folder": "lean4web-tools",
-      "name": "Stable Lean" },
-    { "folder": "DuperDemo",
-      "name": "Duper",
-      "examples": [
-        { "file": "DuperDemo.lean",
-          "name": "Duper" }]
-    }
+    { "folder": "stable",
+      "name": "Stable Lean" }
   ],
   "serverCountry": "Germany",
   "contactInformation": <>
diff --git a/client/src/css/test.css b/client/src/css/test.css
new file mode 100644
index 00000000..07294233
--- /dev/null
+++ b/client/src/css/test.css
@@ -0,0 +1,3 @@
+body {
+    background-color: lightgoldenrodyellow !important;
+}
\ No newline at end of file