not less or more

If Woolf is your source text, your erasure poem can't go wrong: Every word in the text was well tested before you came along with your eraser.

sacrilege change

[Charles] Lamb then came to Oxbridge perhaps a hundred years ago. Certainly he wrote an essay—the name escapes me—about the manuscript of one of Milton’s poems which he saw here. It was Lycidas perhaps, and Lamb wrote how it shocked him to think it possible that any word in Lycidas could have been different from what it is. To think of Milton changing words in that poem seemed to him a sort of sacrilege. This led me to remember what I could of Lycidas and to amuse myself with guessing which word it could have been that Milton had altered, and why. —Virginia Woolf, A Room of One’s Own (1929)