What is a subheading and how do they help determine the structure of the text in this article?

Read the excerpt from the odyssey. but the man skilled in all ways of contending, satisfied by the great bow's look and heft, like a musician, like a harper, when with quiet hand upon his instrument he draws between his thumb and forefinger a sweet new string upon a peg: so effortlessly odysseus in one motion strung the bow. according to this excerpt, how has odysseus changed over the course of his adventure?

Why is one side of the moon called the dark side of the moon?

Mr and mrs van daan murmur their welcome what are the playwrights indicating by using the word murmur?