To establish the setting of the passage.
Using setting plays a major rule in a story's mood. Night scenes can be used to create tension and flashbacks can be used to create an emotion (happiness, melancholy, guilt etc.)
Answer:
The only thing I can think of would be the numbers on mailboxes or apartment doors (address numbers). Those are the only numbers I imagine you would be seeing on houses and things but I am not 100% sure of this answer.
In Romeo and Juliet, the Prince's speech states that anymore fighting between the two families will result in death. The Prince uses peaceful language and tries to be calm while conveying his message. As for Gregory and Sampson they want to fight and are only waiting for someone else to start the fight so they will not be punished. They also argue with each other and change their minds once they see who they will actually be fighting.