"To proofread the paper" means carefully reviewing and checking a written document for errors in spelling, grammar, punctuation, and formatting before finalizing it. Full definition
Do not forget proofreading your paper before submitting it to ensure it is error - free. (resume2017.com)
Even if you're super-smart, it's understandable that you can make some mistakes during writing so you have to proofread your paper once again. (booklife.com)
Nevertheless, Paper Writing Service agrees that if you want to do well on your academic paper, you should get professionals to proofread a paper for you. (paperwritingservice.info)