I want a description under the user name input field in the Wordpress registration form like in the next example. How can I do this?
//create an extra field in login page for invitation code
add_action( 'register_form', 'add_invitation_code_field' );
function add_invitation_code_field() {
?>
<p>
<label for="invitation_code">
Invitation code
<input id="invitation_code" class="input" type="text" size="20" value="" name="invitation_code"/>
<span class="description"><?php _e("Description text"); ?></span>
</label>
</p>
<?php
}