help.module

<?php

/**
 * @file
 * Manages displaying online help.
 */

/**
 * Implements hook_menu().
 */
function help_menu() {
  $items['admin/help'] = array(
    'title' => 'Help',
    'description' => 'Reference for usage, configuration, and modules.',
    'page callback' => 'help_main',
    'access arguments' => array(
      'access administration pages',
    ),
    'weight' => 9,
    'file' => 'help.admin.inc',
  );
  $modules = module_implements('help');
  ksort($modules);
  foreach ($modules as $module) {
    $items['admin/help/' . $module] = array(
      'title' => $module,
      'page callback' => 'help_page',
      'page arguments' => array(
        2,
      ),
      'access arguments' => array(
        'access administration pages',
      ),
      'type' => MENU_VISIBLE_IN_BREADCRUMB,
      'file' => 'help.admin.inc',
    );
  }
  return $items;
}

/**
 * Implements hook_help().
 */
function help_help($path, $arg) {
  switch ($path) {
    case 'admin/help':
      $output = '<p>' . t('Follow these steps to set up and start using your website:') . '</p>';
      $output .= '<ol>';
      $output .= '<li>' . t('<strong>Configure your website</strong> Once logged in, visit the <a href="@admin">administration section</a>, where you can <a href="@config">customize and configure</a> all aspects of your website.', array(
        '@admin' => url('admin'),
        '@config' => url('admin/config'),
      )) . '</li>';
      $output .= '<li>' . t('<strong>Enable additional functionality</strong> Next, visit the <a href="@modules">module list</a> and enable features which suit your specific needs. You can find additional modules in the <a href="@download_modules">Drupal modules download section</a>.', array(
        '@modules' => url('admin/modules'),
        '@download_modules' => 'http://drupal.org/project/modules',
      )) . '</li>';
      $output .= '<li>' . t('<strong>Customize your website design</strong> To change the "look and feel" of your website, visit the <a href="@themes">themes section</a>. You may choose from one of the included themes or download additional themes from the <a href="@download_themes">Drupal themes download section</a>.', array(
        '@themes' => url('admin/appearance'),
        '@download_themes' => 'http://drupal.org/project/themes',
      )) . '</li>';

      // Display a link to the create content page if Node module is enabled.
      if (module_exists('node')) {
        $output .= '<li>' . t('<strong>Start posting content</strong> Finally, you can <a href="@content">add new content</a> for your website.', array(
          '@content' => url('node/add'),
        )) . '</li>';
      }
      $output .= '</ol>';
      $output .= '<p>' . t('For more information, refer to the specific topics listed in the next section or to the <a href="@handbook">online Drupal handbooks</a>. You may also post at the <a href="@forum">Drupal forum</a> or view the wide range of <a href="@support">other support options</a> available.', array(
        '@help' => url('admin/help'),
        '@handbook' => 'http://drupal.org/documentation',
        '@forum' => 'http://drupal.org/forum',
        '@support' => 'http://drupal.org/support',
      )) . '</p>';
      return $output;
    case 'admin/help#help':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('The Help module provides <a href="@help-page">Help reference pages</a> and context-sensitive advice to guide you through the use and configuration of modules. It is a starting point for the online <a href="@handbook">Drupal handbooks</a>. The handbooks contain more extensive and up-to-date information, are annotated with user-contributed comments, and serve as the definitive reference point for all Drupal documentation. For more information, see the online handbook entry for the <a href="@help">Help module</a>.', array(
        '@help' => 'http://drupal.org/documentation/modules/help/',
        '@handbook' => 'http://drupal.org/documentation',
        '@help-page' => url('admin/help'),
      )) . '</p>';
      $output .= '<h3>' . t('Uses') . '</h3>';
      $output .= '<dl>';
      $output .= '<dt>' . t('Providing a help reference') . '</dt>';
      $output .= '<dd>' . t('The Help module displays explanations for using each module listed on the main <a href="@help">Help reference page</a>.', array(
        '@help' => url('admin/help'),
      )) . '</dd>';
      $output .= '<dt>' . t('Providing context-sensitive help') . '</dt>';
      $output .= '<dd>' . t('The Help module displays context-sensitive advice and explanations on various pages.') . '</dd>';
      $output .= '</dl>';
      return $output;
  }
}

/**
 * Implements hook_preprocess_HOOK() for block.tpl.php.
 */
function help_preprocess_block(&$variables) {
  if ($variables['block']->module == 'system' && $variables['block']->delta == 'help') {
    $variables['attributes']['role'] = 'complementary';
  }
}