diff --git a/core/modules/page_cache/page_cache.module b/core/modules/page_cache/page_cache.module
index d848b34..981a972 100644
--- a/core/modules/page_cache/page_cache.module
+++ b/core/modules/page_cache/page_cache.module
@@ -21,7 +21,7 @@ function page_cache_help($route_name, RouteMatchInterface $route_match) {
       $output .= '<dl>';
       $output .= '<dt>' . t('Speeding up your site') . '</dt>';
       $output .= '<dd>' . t('Pages requested by anonymous users are stored the first time they are requested and then are re-used. Depending on your site configuration and the amount of your web traffic tied to anonymous visitors, the caching system may significantly increase the speed of your site.') . '</dd>';
-      $output .= '<dd>' . t('Unlike authenticated users, anonymous users usually share the same session and set of permissions. Therefore, the same URL results in the same page for all anonymous users. This is why pages can be cached for anonymous users, whereas they will have to be rebuilt for every authenticated user.') . '</dd>';
+      $output .= '<dd>' . t('Pages are usually identical for all anonymous users, while they can be customized for each authenticated user. This is why pages can be cached for anonymous users, whereas they will have to be rebuilt for every authenticated user.') . '</dd>';
       $output .= '<dt>' . t('Configuring the internal page cache') . '</dt>';
       $output .= '<dd>' . t('On the <a href="@cache-settings">Performance page</a>, you can configure how long browsers and proxies may cache pages; that setting is also respected by the Internal Page Cache module. There is no other configuration.', array('@cache-settings' => \Drupal::url('system.performance_settings')))  . '</dd>';
       $output .= '</dl>';
diff --git a/core/modules/system/system.module b/core/modules/system/system.module
index d0608eb..d3268cf 100644
--- a/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -76,7 +76,7 @@ function system_help($route_name, RouteMatchInterface $route_match) {
     case 'help.page.system':
       $output = '';
       $output .= '<h3>' . t('About') . '</h3>';
-      $output .= '<p>' . t('The System module is integral to the site: it provides user interfaces for many core systems and settings, as well as the basic administrative menu structure. Note that, for small to medium-sized websites, the Internal Page Cache module has to be installed so that pages are efficiently cached and re-used. For more information, see the <a href="!system">online documentation for the System module</a>.', array('!system' => 'https://www.drupal.org/documentation/modules/system')) . '</p>';
+      $output .= '<p>' . t('The System module is integral to the site: it provides user interfaces for many core systems and settings, as well as the basic administrative menu structure. For more information, see the <a href="!system">online documentation for the System module</a>.', array('!system' => 'https://www.drupal.org/documentation/modules/system')) . '</p>';
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Managing modules') . '</dt>';
@@ -89,8 +89,8 @@ function system_help($route_name, RouteMatchInterface $route_match) {
       $output .= '<dd>' . t('The System module provides pages for managing basic site configuration, including <a href="!date-time-settings">Date and time formats</a> and basic <a href="!site-info">Site information</a> (site name, email address to send mail from, home page, and error pages). Additional configuration pages are listed on the main <a href="!config">Configuration page</a>.', array('!date-time-settings' => \Drupal::url('entity.date_format.collection'), '!site-info' => \Drupal::url('system.site_information_settings'), '!config' => \Drupal::url('system.admin_config'))) . '</dd>';
       $output .= '<dt>' . t('Using maintenance mode') . '</dt>';
       $output .= '<dd>' . t('When you are performing site maintenance, you can prevent non-administrative users (including anonymous visitors) from viewing your site by putting it in <a href="!maintenance-mode">Maintenance mode</a>. This will prevent unauthorized users from making changes to the site while you are performing maintenance, or from seeing a broken site while updates are in progress.', array('!maintenance-mode' => \Drupal::url('system.site_maintenance_mode'))) . '</dd>';
-      $output .= '<dt>' . t('Bandwith optimization') . '</dt>';
-      $output .= '<dd>' . t('The site can be configured to <a href="!bandwith-optimization">aggregate</a> CSS and JavaScript files, making the total request size smaller.', array('!bandwith-optimization' => \Drupal::url('system.performance_settings'))) . '</dd>';
+      $output .= '<dt>' . t('Performance') . '</dt>';
+      $output .= '<dd>' . t('The site can be configured to <a href="!bandwith-optimization">aggregate</a> CSS and JavaScript files, making the total request size smaller. Note that, for small to medium-sized websites, the Internal Page Cache module should be installed so that pages are efficiently cached and re-used.', array('!bandwith-optimization' => \Drupal::url('system.performance_settings'))) . '</dd>';
       $output .= '<dt>' . t('Configuring cron') . '</dt>';
       $output .= '<dd>' . t('In order for the site and its modules to continue to operate well, a set of routine administrative operations must run on a regular basis; these operations are known as <em>cron</em> tasks. On the <a href="!cron">Cron page</a>, you can configure cron to run periodically as part of normal page requests, or you can turn this off and trigger cron from an outside process on your web server. You can verify the status of cron tasks by visiting the <a href="!status">Status report page</a>. For more information, see the <a href="!handbook">online documentation for configuring cron jobs</a>.', array('!status' => \Drupal::url('system.status'), '!handbook' => 'https://www.drupal.org/cron', '!cron' => \Drupal::url('system.cron_settings'))) . '</dd>';
       $output .= '<dt>' . t('Configuring the file system') . '</dt>';