diff --git a/02_misc/README.md b/02_misc/README.md
index 913b92b..7c96954 100644
--- a/02_misc/README.md
+++ b/02_misc/README.md
@@ -4,6 +4,7 @@ Miscellaneous
 If there is some time left, it is always good to know more about these topics. Render all slides with [HedgeDoc](https://hedgedoc.org/), e.g. from [GWDG](https://pad.gwdg.de/).
 
 - Technical writing: [slides](https://github.com/RSE-102/Lecture-Material/blob/main/02_misc/technical_writing_slides.md)
+- Repository layout: [slides](https://github.com/RSE-102/Lecture-Material/blob/main/02_misc/repository_layouts_slides.md)
 - Versioning: [slides](https://github.com/RSE-102/Lecture-Material/blob/main/02_misc/versioning_slides.md)
 - FLOSS licenses: [slides](https://github.com/RSE-102/Lecture-Material/blob/main/02_misc/floss_licenses_slides.md)
 - Linux fundamentals: [slides](https://github.com/RSE-102/Lecture-Material/blob/main/02_misc/linux_fundamentals_slides.md), [demo notes](https://github.com/RSE-102/Lecture-Material/blob/main/02_misc/linux_fundamentals_demo.md)
diff --git a/02_misc/floss_licenses_slides.md b/02_misc/floss_licenses_slides.md
index 1dddc69..48479ae 100644
--- a/02_misc/floss_licenses_slides.md
+++ b/02_misc/floss_licenses_slides.md
@@ -135,9 +135,9 @@ THE SOFTWARE IS PROVIDED "AS IS", ...
 - Two main restrictions:
     - (A) If you modify software and share it (e.g. sell binary), you need to publish the source code of the modification under the same license.
     - (B) If you use software in larger works (e.g. through interfaces or data structures), restriction (A) holds for larger works as well.
-        - Example: DuMuX is GPLv3. Thus, if you publish a solver using DuMuX, it needs to be GPLv3 again.
+        - Example: DuMuX is GPLv3. Thus, if you publish a solver using DuMuX, it needs to be GPLv3 too.
 - **GNU LGPL**: "L" stands for lesser (sometimes also for library)
-    - Only restriction A, not B
+    - Only restriction (A), not (B)
         - Example: preCICE is LGPLv3. Thus, an adapter using preCICE can be made a commercial product.
 
 ---
@@ -151,7 +151,7 @@ THE SOFTWARE IS PROVIDED "AS IS", ...
     - **-BY**: attribution -> you need to credit original creation
     - **-SA**: share alike -> modifications need same license (similar to copyleft)
     - **-ND**: no derivatives -> you are not allowed to modify
-    - **-NC**: non-commercial -> you cannot use in commercial context
+    - **-NC**: non-commercial -> you cannot use in commercial context (even in a nonprofit organization)
 - Combine as you want, e.g. **CC-BY-NC**
 
 ---
diff --git a/02_misc/repository_layouts_slides.md b/02_misc/repository_layouts_slides.md
new file mode 100644
index 0000000..1485535
--- /dev/null
+++ b/02_misc/repository_layouts_slides.md
@@ -0,0 +1,92 @@
+---
+type: slide
+slideOptions:
+  transition: slide
+  width: 1400
+  height: 900
+  margin: 0.1
+---
+
+<style>
+  .reveal strong {
+    font-weight: bold;
+    color: orange;
+  }
+  .reveal p {
+    text-align: left;
+  }
+  .reveal section h1 {
+    color: orange;
+  }
+  .reveal section h2 {
+    color: orange;
+  }
+  .reveal pre code {
+    font-family: 'Ubuntu Mono';
+    color: orange;
+  }
+  .reveal section img {
+    background:none;
+    border:none;
+    box-shadow:none;
+  }
+</style>
+
+# Repository layouts
+
+---
+
+## Motivation
+
+- Repositories contain source code, documentation, CI/CD config files, test files, author lists, etc.
+- You want to divide the project structure to simplify CD workflows and packaging.
+
+---
+
+## Python src layout
+
+```
+mypackage/
+├── docs/
+│   ├── conf.py
+│   └── index.rst
+├── src/
+│   └── mypackage/
+│       ├── __init__.py
+│       └── main.py
+├── tests/
+│   └── integration_test.py
+├── CHANGELOG.md
+├── LICENSE.md
+├── README.md
+└── pyproject.toml
+```
+
+---
+
+## Pitchfork layout
+
+```
+myapp/
+├── docs/
+│   ├── Doxyfile
+│   └── main.dox
+├── include/
+│   └── myapp/
+│       └── api.h
+├── src/
+│   ├── core.h
+│   └── core.c
+├── tests/
+│   └── unit_test.c
+├── CHANGELOG.md
+├── LICENSE.md
+└── README.md
+```
+
+---
+
+## Further Reading
+
+- [Pitchfork](https://github.com/vector-of-bool/pitchfork)
+- Python Packaging User Guide's [src layout vs flat layout](https://packaging.python.org/en/latest/discussions/src-layout-vs-flat-layout/)
diff --git a/02_misc/versioning_slides.md b/02_misc/versioning_slides.md
index 4e60812..4c9684c 100644
--- a/02_misc/versioning_slides.md
+++ b/02_misc/versioning_slides.md
@@ -52,21 +52,24 @@ slideOptions:
 - Semantic versioning
     - [Linux Kernel](https://kernel.org/): 5.16.5 (Release), 5.17-rc2 (Preview)
 - [PEP 440](https://www.python.org/dev/peps/pep-0440/)
-    - [pyMOR](https://pymor.org/): 2022.2.0
+    - [pyMOR](https://pymor.org/): 2025.2.0
 - Calendar versioning
-    - [Ubuntu](ubuntu.com/): 22.10 (Latest), 22.04 (LTS)
-    - [OpenFOAM](https://www.openfoam.com/current-release) (`.com`): v2112
+    - [Ubuntu](ubuntu.com/): 25.10 (Latest), 24.04 (LTS)
+    - [OpenFOAM](https://www.openfoam.com/current-release) (`.com`): v2512
 - Others
     - [TeX](https://tug.org/): 3.141592653 (Latest), 3.14159265 (Ubuntu 20.04)
-    - [OpenFOAM](https://openfoam.org/release/) (`.org`): 10 (Latest), but "always releasable" (date patches, e.g. `20221128`)
+    - [OpenFOAM](https://openfoam.org/release/) (`.org`): 13 (Latest), but "always releasable" (date patches, e.g. `20221128`)
 
 ---
 
 ## Versioning Standards
 
-- [Semantic Versioning](https://semver.org/)
 - [Calendar Versioning](https://calver.org/)
+    - useful to coordinate related projects
 - [PEP 440](https://www.python.org/dev/peps/pep-0440/)
+    - flexible versioning with metadata
+- [Semantic Versioning](https://semver.org/)
+    - versioning with compatibility promises
 
 ---