Texture manipulation within the editor. Keep in mind: * DO NOT use "progressive encoding" in JPG files for OA, because some versions of the engine are not capable of loading maps containing them. * Texture sizes (width and height) should be power of two, to avoid a resampling which will bring down rendering quality. Examples: 64x64, 128x128, 256x256, 512x512, 256x512, 256x1024 are okay, while 230x230, 250x1000 etc should be avoided. See also Manual/Graphic options#Round images down/up.