Core grid manipulation functionality. Illustrates context-variable class modifications and move functionality. Context-specific re-classing <section class="col10wide column" in data-in-base-class="column" data-in-mobile-class="col3wide" data-in-tablet-class="col6wide" data-in-standard-class="col10wide"> ... </section> Context-specific DOM manipulation <div id="ad"> <div in data-in-base-append="#ad" data-in-standard-append="#ad" data-in-mobile-append="#mobile_ad" data-in-tablet-append="#tablet_ad"> ... </div> </div> <div id="mobile_ad"></div> <div id="tablet_ad"></div>