How do i show a poem excerpt next to eachother?

Question

I've got a poem that has been selected for a magazine, they want to use parts of the poem (it's 21 pages) How can they show this without making it look like its the actual order of the poem?

Answer 1

Readers will know parts of a piece of writing have been omitted by the use of ellipses. An example is:

"O say can you see...and the rockets' red glare..."

Answer 2

By putting ellipses in place of the unpublished portions, readers will know something's been omitted.

Example: "Roses are red...Sugar is sweet and so are you."