Toolkit JSP tags can identify the client locale so that the browser
renders all the messages in the correct language. This is possible because
of a custom tag (AddBundleTag) that can set the resource bundle file according
to the user locale. This resource bundle contains the messages in the required
language and FieldError and ValidationError tags can take the error information
from the resource bundle using error codes. See Managing NLS in the HTML Channel
documentation for more information.