## Icons used in GROOPS GUI

We list external icons contained in the GROOPS repository with references and licenses here.

### Google's Material design icons

* Reference: https://github.com/google/material-design-icons
* Files: `scalable/*` except `groops.svg`
* License: [Apache License 2.0](https://github.com/groops-devs/groops/blob/main/gui/resources/LICENSE_Apache2)
* Modifications:
  * All icons have been recolored.
  * `document-save-as.svg`: A pen has been added.
  * `element-mustset.svg`, `element-mustset-unbounded.svg`, `element-mustset-unbounded-disabled.svg`: A star has been added.
