You have just loaded a DarkTree into the Bitmap Renderer. The Bitmap Renderer allows you to generate texture maps including true elevation maps from a DarkTree. You won't need the Bitmap Renderer if you use the DarkTree in a 3D package that we have a Simbiont plug-in for.
Each time you drag a DarkTree to the Bitmap Renderer, it is added to the top of the Texture List which is visible to the right of the Render button.
Since the Bitmap Renderer is threaded, you can continue working on other DarkTrees while rendering bitmaps in the background.
