/**
  * Applys placeholders to a string. Mostly useful for components that need to handle strings in
  * some other way than simply outputting XHTML (e.g. include string in a graphc).
  *
  * @param sValue Original string
  * @return String with any placeholders applied
  */
 public String applyPlaceholders(String sValue) {
   return XML.replaceTokens(sValue, "__", mPlaceholders);
 }
 /**
  * Fix placeholders just before returning output.
  *
  * @param r Output about to be returned
  */
 private void fixPlaceholders(Rendering r) {
   XML.replaceTokens(r.getXHTML(), "__", mPlaceholders);
 }