<p>The Online Writing Lab (OWL) at Purdue University houses writing resources and instructional material. As a member of the Writing Lab community, you can find information to assist with various writing projects. Teachers and trainers can also use this material for in-class and out-of-class instruction. Links should be attributed to the Purdue University Online Writing Lab (OWL). No commercial use of the Purdue OWL is permitted.</p>