A third purpose of editing analysis is to identify meaning differences
between the original and the edited versions. Here the focus is on the
content of the text rather than language and its use. We may compare, for
instance, the final and rough drafts of a poem. The forms which a poet has
tried but rejected can throw into sharper relief the expression finally chosen.
Its significance might have been obscure or even unnoticed without the
contrast of the poet's deliberate alteration.