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spec: He said all those pictures and colors are based on real physics . The String may not contain any extraneous characters ( whitespace , for example ) . Going a step further you can get the Sports Wagon . The string should not contain any character with the value > 255 ( which can only happen if you're using UTF-8 encoding ) . The most recent guidelines set 2,500 milligrams a day as the Upper Tolerable Intake level .