They find and mark any corrections that need to be made. Proofreaders look for typographical errors, misspelled words, grammar errors, and poor positioning of text and graphics. They use a standardized set of symbols to show what needs to be changed, inserted, or deleted. A is a printout of type that has already been set. This term is also applied to printouts from computers.
Many proofreaders use the following method to proofread.
They mark errors that appear in the proof and return the marked proof for corrections. Later they will check the corrected proof against the copy. Some proofreaders work on information that is displayed on a computer and make the changes directly to the file. Proofreaders sometimes use a second method of proofreading. They work with a second person who is known as a copy holder.