I have altered the title to Everyman 3926, thanks Jono. Thanks also to Jazzgirl and Richard for the explanations, I am always interested in how these things work.
PS Captcha is driving me potty this morning.
PPS For consistency and ease of reading, and as a former Text Processing Supervisor, I have decided that four figure numbers such as 3926 will be presented without the comma, but 5 figure numbers, 28,968, will have a comma😇