Following traditional etiquette, if there is ‘dear sir’ or ‘dear madam’ at the top of your letter or email, then you should sign off with ‘yours faithfully’ or ‘yours truly.’ ...

The plus sign (+) means "ADD" in programming and on calculator keyboards. For example, 10 + 7 means 10 added to 7. It is also used as a concatenation symbol for text fields. For example ...