| drupal_set_message | drupal/includes/bootstrap.inc | Set a message which reflects the status of the performed operation. |
| file_check_path | drupal/includes/file.inc | Checks path to see if it is a directory, or a directory/file. |
| file_create_path | drupal/includes/file.inc | Make sure the destination is a complete path and resides in the file system
directory, if it is not prepend the file system directory. |
| file_destination | drupal/includes/file.inc | Determines the destination path for a file depending on how replacement of
existing files should be handled. |
| file_save | drupal/includes/file.inc | Save a file object to the database. |
| file_unmanaged_copy | drupal/includes/file.inc | Copy a file to a new location without calling any hooks or making any
changes to the database. |
| module_invoke_all | drupal/includes/module.inc | Invoke a hook in all enabled modules that implement it. |
| t | drupal/includes/common.inc | Translate strings to the page language or a given language. |
| watchdog | drupal/includes/bootstrap.inc | Log a system message. |