revise

verb:to alter, edit, or improve something, especially a piece of writing, by making corrections or additions
- I need to revise my essay before submitting it to my professor.
verb:to reconsider and change an opinion or decision
- The judge was forced to revise his ruling after new evidence was presented.
verb:to study material again, especially in preparation for an examination
- He revised his notes every night before the final exam.