I NOTED from your article headlined, ''Smoking policies to remain'' (South China Morning Post, May 5), that all 82 McDonald's outlets are non-smoking. Whilst it is true that its policy is advertised, it is not enforced by its staff. I have sat in several of the company's establishments next to smokers who have been totally ignored by staff and management. It is only when a complaint is made that action is taken. BERDI TUDLO Sha Tin