No language negotiation. The default language is used.

3 uses of LANGUAGE_NEGOTIATION_NONE
language_initialize in includes/language.inc
Choose a language for the page, based on language negotiation settings.
locale_languages_configure_form in includes/locale.inc
Setting for language negotiation options
locale_user in modules/locale/locale.module
Implementation of hook_user().

File

includes/bootstrap.inc, line 185
Functions that need to be loaded on every Drupal request.

Code

define('LANGUAGE_NEGOTIATION_NONE', 0);