Sir, Your correspondent Denise Shaw ('Site signs are sexist', Letters, April 14) needs to go back to her schoolbooks where she will find the noun 'man' is used to describe a human, regardless of sex.
It is used to differentiate us from other creatures. Admittedly it is also used to refer to the male of the species but I would say that it is a degree over-sensitivity that leads her to assume the signs she describes are using the word in this sense. No doubt political correctness will eventually see us rewriting such signs to say 'Danger People Working Overhead'and 'Danger People At Work'but please save us from 'Danger Peoplehole Cover'.
Peter J Robertson Group head of marketing The Rydon Group East Sussex