Quotations are mainly used to

a) organize important information.
b) decide about the reliability of information.
c) credit the source of a piece of information.

dickinson punctuation and lines in her poems to establish a rhythm. each reader will naturally find themselves reading the poem in the same way. she uses the repeating question marks and exclamation points to convey the passion in her words. shelley uses punctuation to paint a picture in the reader's mind. for example, the ellipses after "stand in the dessert" evoke a silence, as it would feel in a deserted, old place.