... me forever to evaluate. From which I need to select 1 or maybe 2 options to offer in the background shapes. Here are some examples. In each case the original as loaded tile is on the right: 3. "Triangle" interpolation only. This is similar to the browser resampling for zoom level 19: 2_241521_120000002.png 4. "Triangle" interpolation with low-contrast conversion: 2_241521_120000003.png 5. "B -Spline" interpolation only: 2_241521_120000004.png 6. "B -Spline" interpolation with low-contrast conversion: 2_241521_300000000.png Answers on a postcard. Which if any of these image effects would you find the most comfortable to work over? In each case the original loaded tile is on the right. I think my preference is for image 5. above -- notice the improved separation between the platform edge and the rail. There are of course several other settings you might use at the same time -- Templot can also make a negative image, and there are other colour schemes for the templates. The use of these NLS maps is ...