jubilee Thanks for your help and no offence taken. Most usually, I am thought of as a know it all, but I could not find reference to the EQU on their site and did not have more time to spare (at the time) to search further.
I know that it's a hackneyed question in PPRuNe but, in so far as I recall, the first time I've asked such a question! Thanks also to
OliWW.
I am particularly indebted to
CabinCrewe, for checking up on the 'whether' during that time period.
Back to school for me for typing lessons.