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OK, I'll accept your reasoning to move it away from Entonox. However, I still strongly feel that ""Nitrous oxide 50%-oxygen 50%"" is an unwieldy and poor title choice. What else could we use? What about, for example, Gas and air, the popular colloquial term? Not that I'm saying that that is the best choice, just looking for a good alternative. Your suggested title would be kinda like moving Plaster, a registered trademark, to 'non-fluffy adhesive sterile dressing', a term which I have seen used in a few training materials, and which amuses me to this day P. The Plaster article actually exists at Adhesive bandage, a good term - let's see if we can find the 'Adhesive bandage' for Entonox. Suggestions? Talk "