Regina Henschel writes: Susanne Mohn asked on the German-language user’s mailing list how to create a colour wheel with LibreOffice. It was not about the colours themselves, but about the geometry. How do you create a circle or ring with equally sized sectors? Very different solutions were proposed. Susanne Mohn, Harald Berger and I (Regina Henschel) have created a page in the LibreOffice Wiki so that these do not remain hidden in a thread. Due to the development process, some sample files are in German, but the page itself is in English. Colour wheels can be used to create “doughnut charts” of data. Have fun exploring!