// If the element cannot be child of the current element.
if ( !element.isUnknown && !currentNode.isUnknown && !currentDtd[ tagName ] ) {
// Current node doesn't have a close tag, time for a close
// If the element cannot be child of the current element.
if ( !element.isUnknown && !currentNode.isUnknown && !currentDtd[ tagName ] ) {
// Current node doesn't have a close tag, time for a close