Hello Malcolm Here as promised, is the funny thing that happened to me. Many years ago, I went to my local library, which was part of a very large secondary school, it was however close to our house and I could walk there, I chose my talking books and was leaving, the front doors were closed, and I could not get out, so found someone, who told me to press the button on the wall, beside the front doors, so I did, it was the fire alarm, I could hear it going off all over the school, and we were only about quarter of a mile from the fire station, I very quickly found another button and pressed it, the doors opened and I made a quick get away, as I was walking or almost running down the road. the fire engine passed me, I did not go there again on my own. Bye for now Elaine skype ElaineandKezi