OK. Pax, everyone. fellmama, you might consider that wemyss has paid me an implicit compliment by assuming I could deal with his brand of elaborate English. (The fact that I did not understand one or two of the things he said seems to hint that the compliment was excessive.) And I have to tell you that, for private reasons, he would find the description "an enormous tool" rather less displeasing than you think. 8-)
Re: Not recognising standard British abbreviations, however -