A caesura is a strong pause within a line, and is often found alongside enjambment. If all the pauses in the sense of the poem were to occur at the line breaks, this could become dull; moving the pauses so they occur within the line creates a musical interest. A caesura may be marked like this: ||
John Mole's 'Coming Home' has a first stanza that sets off in a very steady rhythm, with the first four sentences the same length as the line, and the same length as each other. The fifth sentence is only half-a-line long, and the pause following that full stop creates a caesura in the line, which draws attention to the important paradox in the fifth line, that "They lie together now. They sleep apart".