'#description'=>t("Use lowercase characters, numbers and underscores. Name must start with a letter."),
'#description'=>t("Use only lower-case letters, numbers, and underscores. Name must start with a letter. For details, see <a href='https://www.drupal.org/docs/creating-custom-modules/naming-and-placing-your-drupal-module'>Naming and placing your Drupal module</a>."),