Issue #3344164: Implement hook_help()

button_formatter.module

@@ -5,6 +5,22 @@
  * Contains button_formatter.module..
  */
 
+use Drupal\Core\Routing\RouteMatchInterface;
+
+ /**
+ * Implements hook_help().
+ */
+function button_formatter_help($route_name, RouteMatchInterface $route_match) {
+  switch ($route_name) {
+    // Main module help for the button_formatter module.
+    case 'help.page.button_formatter':
+      $output = '';
+      $output .= '<h3>' . t('About') . '</h3>';
+      $output .= '<p>' . t('The Button Formatter module introduces a new formatting option for file and link fields, allowing users to add a customizable button-style display. This enhances the visual appeal and user-friendliness of these fields, improving the overall user experience of the web application.') . '</p>';
+      return $output;
+  }
+}
+
 /**
  * Implements hook_theme().
  */