* @param pos
* @return the inserted run
*/
public XWPFRun insertNewRun(int pos){
if (pos >= 0 && pos <= paragraph.sizeOfRArray()) {
CTR ctRun = paragraph.insertNewR(pos);
XWPFRun newRun = new XWPFRun(ctRun, this);
// To update the iruns, find where we're going
// in the normal runs, and go in there
int iPos = iruns.size();