Minor edit to developer introduction authored by Dr. phil. Stephen James Tobin's avatar Dr. phil. Stephen James Tobin
......@@ -14,7 +14,7 @@ At first you need some programs to run the VR-classroom in developer mode. These
* [Blender](https://www.blender.org/) useful tool for creating models, 3D-objects and changing the environment
* For class discussions:
* [yEd Graph Editor](https://www.yworks.com/products/yed/download): creating dialogue trees
* [yEd Graph Editor](https://www.yworks.com/products/yed/download): creating structure trees
* Audio recording software: according to your own preference
* Optional: Image creation software, e.g. Gimp, etc.
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