To feel the raised print, run your finger over it or scratch it gently with your fingernail.[30] Ultraviolet ink,[28] Under ultraviolet light, the paper itself should not glow, fibres embedded in the paper should appear, and should be coloured red, blue and green, the European Union flag looks green and has orange stars, the ECB President signature turns green, the large stars and small circles on the front glow and the European map, a bridge and the value numeral on the back appear in yellow.[31] Microprinting,[28] On numerous areas of the banknotes you can see microprinting, for example, inside the "ΕΥΡΩ" (EURO in Greek characters) on the front. You will need a magnifying glass to see it.