In general, Proofreading is the final stage of the editing process, focusing on surface errors such as misspellings and mistakes in grammar and punctuation. Proofreading is important to ensure that there is not any: Grammatical error, Capitalization error, Numbering error. Spelling error. In code editing, proof-reading ensures the user to correct any or all the logical, indented, syntaxial errors present in the code, and we use a code reader or viewer to analyse our code.