I have 'lurked' on this list for a while, content to read and get a feel for the general discussion, seeing 'where everyone is coming from'. I have only contributed twice, both in response to others messages, and the responses which came from that were overwhelming for my own research. So, despite the fact that I am repeating the previous message Ann - - - - - thank you...... Catriona (interests posted in another message to keep on-topic)