code: function renderBlockOnIE(block) {
  				var oldRng;
  
  				if (tinymce.isIE && dom.isBlock(block)) {
  					oldRng = selection.getRng();
  					block.appendChild(dom.create('span', null, '\u00a0'));
  					selection.select(block);
  					block.lastChild.outerHTML = '';
  					selection.setRng(oldRng);
  				}
  			}
docs: Renders empty block on IE