Hi Klaus, Please excuse the delayed answer. Are you asking from the developer's point of view or from the user's perspective? The Physical Sky object is still there in R25, so is the "Cloud Tool". It was probably removed from the top menu, but you can still access it using Commander (Tools -> Commander or Shift+C): Cheers, Ilia [image: 1704903921815-9121f34b-5996-49fd-b502-8f4342f7879e-image.png]

Hi, thank you for the tips. Here is my C++ -treegenerator-plugin, written for R25: http://www.klausfilm.bplaced.net/TreeGenerator/Website_Treegenerator.html Cheers Klaus

@love_me_render Thank you very much