crop-monitor/manager/controllers/custom/help.class.php

<?php
/**
 * @package modx
 */
/**
 * Loads the help page
 *
 * @package modx
 * @subpackage manager.controllers
 */
class HelpManagerController extends modParsedManagerController {
    /**
     * Check for any permissions or requirements to load page
     * @return bool
     */
    public function checkPermissions() {
        return $this->modx->hasPermission('help');
    }

    /**
     * Return the pagetitle
     *
     * @return string
     */
    public function getPageTitle() {
        return $this->modx->lexicon('help');
    }

    /**
     * Return the location of the template file
     * @return string
     */
    public function getTemplateFile() {
        return 'help.tpl';
    }

    /**
     * Specify the language topics to load
     * @return array
     */
    public function getLanguageTopics() {
        return array('about');
    }
}