Conventions are the rules of a language. They are the common patterns of grammar, spelling, punctuation, paragraphing and capitalization that readers come to expect in good writing. They make writing easy to read and understand. A reader may not even notice when conventions are well done, but might be distracted from the good ideas that were so carefully planned if the conventions are poorly handled. This is the most mechanical of the six traits and requires writers to learn editing and proofreading skills.