An object imported into 3d can contain one material and one texture. I modeled the cube. I added material to it, I added a texture to it. The texture is a photo .jpg or .png. The texture is the same on all sides (6 sides). I have imported the 3d object to dot23d, everything is in the desired place, the object is displayed together with the texture (photo). Now I need the cube on the same cube to impose a texture only on one side. I still have one material and one texture, i.e. a condition supposedly fulfilled. However, here after importing the object, textura is not displayed. Has some experience in this case.