Hex numbers

[Tom Froysland <Tom Froysland roma2 infn it>]

How is it possible to make a (text) box to get or show a hexadesimal number?

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Tom Frøysland	froysla roma2 infn it
INFN   Universita Roma II   V. Ricerca Scientifica 1   00133 Roma, ITALY	Mob: +39 340 9807781        Pho: +39 (0)6 7259 4823