updated principal

requirements/index.html

@@ -141,6 +141,7 @@ <h2 id="design_principles">Design Principles</h2>
             <li>Be accessible and conform to the Guidelines. <span class="ednote">Note: This design principle will move to the Requirements section once the Conformance section is completed and we determine a specific measurement of compliance. </span></li>
             <li>Be written in plain language, as easy as possible to understand. <span class="ednote"> We need a definition of plain language that includes the ease of translation. Ideally, it will be a broadly accepted definition internationally. </span></li>
 			<li>Improve the ability to support automated testing where appropriate and provide a procedure for repeatable tests when manual testing is appropriate.</li>
+						<li>Provide requirements to address functional needs, while avoiding or minimizing negative impacts on other functional needs. </li>
           </ol>
           <p>The creation process for the guidelines should:</p>
           <ol start="7">