diff --git a/src/zext/plantuml/com/ctreber/acearth/readme.md b/src/zext/plantuml/com/ctreber/acearth/readme.md
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+> [!WARNING] 
+> **Disclaimer**:
+> This file was not part of the original package.
+> It was included only on the PlantUML package to provide source citation and documentation.
+
+# Directory Documentation for `acearth`
+
+## Description
+Internal copy of `AC.earth` - `XEarth` for Java _(code of Christian Treber)_.
+
+## See more information on
+- [readme of `plantuml/acearth`](../../../../../net/sourceforge/plantuml/acearth/readme.md)
diff --git a/src/zext/plantuml/com/google/zxing/readme.md b/src/zext/plantuml/com/google/zxing/readme.md
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+> [!WARNING] 
+> **Disclaimer**:
+> This file was not part of the original package.
+> It was included only on the PlantUML package to provide source citation and documentation.
+
+# Directory Documentation for `zxing`
+
+## Description
+Internal copy of `ZXing` _(code of Google)_.
+
+## Credit
+- :octocat: [zxing/zxing](https://github.com/zxing/zxing)
+
+## See more information on
+- [readme of `plantuml/flashcode`](../../../../../net/sourceforge/plantuml/flashcode/readme.md)