Disregard the first line of this poem

Disregard the title Disregard the previous line Disregard the curse on this rhyme Begin again and take the reverse Undo the redo and restate the curse Send away the nurse, but bring me a verse That is the exact triple opposite of this list: The multiplicative inverse of this twist: An unreaction zoomed up, out, then in: A quantum spin on the unspun lost twin: A negation of the previous post-pre-within: A loss that results in the form of a win: And when you are done, reverse what you've got, Minus the bottom and add up the top, Zip up what was down and rejoice with a frown: I think I have found what was up is now down, And then you will see what has not come to light: A sight that can only be seen in the night: A poem with no depth or width, length or height!