@roger,
roger wrote:
And if they capitalize City, they may be referring to a section of London, right?
They wouldn't capitalise "City" if it was preceded by "That". I debated with myself about whether to capitalise 'City' in my bi-coloured example. Much meaning is supplied by context, and in a subheading below a headline mentioning Manchester, it would be clearly understood that the capital C does not refer to the City Of London.