original_string: function addHelpButton($elementname, $identifier, $component = 'moodle', $linktext = '', $suppresscheck = false) {
          global $OUTPUT;
          if (array_key_exists($elementname, $this->_elementIndex)) {
              $element = $this->_elements[$this->_elementIndex[$elementname]];
              $element->_helpbutton = $OUTPUT->help_icon($identifier, $component, $linktext);
          } else if (!$suppresscheck) {
              debugging(get_string('nonexistentformelements', 'form', $elementname));
          }
      }
code: function addHelpButton($elementname, $identifier, $component = 'moodle', $linktext = '', $suppresscheck = false) {
          global $OUTPUT;
          if (array_key_exists($elementname, $this->_elementIndex)) {
              $element = $this->_elements[$this->_elementIndex[$elementname]];
              $element->_helpbutton = $OUTPUT->help_icon($identifier, $component, $linktext);
          } else if (!$suppresscheck) {
              debugging(get_string('nonexistentformelements', 'form', $elementname));
          }
      }
code_tokens: function addHelpButton ( $ elementname , $ identifier , $ component = 'moodle' , $ linktext = '' , $ suppresscheck = false ) { global $ OUTPUT ; if ( array_key_exists ( $ elementname , $ this -> _elementIndex ) ) { $ element = $ this -> _elements [ $ this -> _elementIndex [ $ elementname ] ] ; $ element -> _helpbutton = $ OUTPUT -> help_icon ( $ identifier , $ component , $ linktext ) ; } else if ( ! $ suppresscheck ) { debugging ( get_string ( 'nonexistentformelements' , 'form' , $ elementname ) ) ; } }
docstring: Add a help button to element, only one button per element is allowed.
  
  This is new, simplified and preferable method of setting a help icon on form elements.
  It uses the new $OUTPUT->help_icon().
  
  Typically, you will provide the same identifier and the component as you have used for the
  label of the element. The string identifier with the _help suffix added is then used
  as the help string.
  
  There has to be two strings defined:
  1/ get_string($identifier, $component) - the title of the help page
  2/ get_string($identifier.'_help', $component) - the actual help page text
  
  @since Moodle 2.0
  @param string $elementname name of the element to add the item to
  @param string $identifier help string identifier without _help suffix
  @param string $component component name to look the help string in
  @param string $linktext optional text to display next to the icon
  @param bool $suppresscheck set to true if the element may not exist
docstring_tokens: Add a help button to element only one button per element is allowed .