Sir, - Do we realise we have the power to save life? It is an amazing compensation for a misfortune which could happen to any of us. I did not know I had this power until I was asked if I had read the small print on the back of my driving licence. It states that a simple signature can make you an organ donor, a lifesaver.The knowledge came closer home when I discovered that my great-nephew, aged 12, needs a new kidney to enable him to lead a normal span of life. He is on a waiting list - and still waiting.Many fatal casualties are not donors, but I believe that relatives are routinely asked if they might become so. Confronted with the grief, horror and trauma of the sudden death of a loved one, I can imagine that such a query might feel like an intrusion and violation. I do not know if I would have the courage to say yes. Yet if I did, it would probably mean only a small insignificant scar, but save the life of another.I suggest very strongly that the proper authorities hand out a suitably worded pamphlet (perhaps persuasive, explanatory and comforting) with every driving licence issued, and do not leave such an important and most urgent matter to the chance reading of the small print. - Yours, etc.,Eileen Mount Charles,Galtrim House,Dunsany,Co Meath.