I am always interested in the ways of scoring the sound of the poem, especially a poem with long lines. Spaces within a line, double colons, slashes, are indications of pause, of breath, of urgency, they are not metrically exact as in a musical notation but they serve (I hope) to make the reader think about the sound of the poem - just as traffic symbols, when driving, make us almost unconsciously aware of a steep hill, an intersection, an icy bridge etc.
Adrienne RichAs her sons have seen her: the mother in patriarchy: controlling, erotic, castrating, heart-suffering, guilt-ridden, and guilt-provoking; a marble brow, a huge breast, an avid cave; between her legs snakes, swamp-grass, or teeth; on her lap a helpless infant or a martyred son. She exists for one purpose: to bear and nourish the son.
Adrienne Rich