  
  Default: ``None``
  
  The domain to use for the language cookie. Set this to a string such as
  ``".example.com"`` (note the leading dot!) for cross-domain cookies, or use
  ``None`` for a standard domain cookie.
  
  Be cautious when updating this setting on a production site. If you update
  this setting to enable cross-domain cookies on a site that previously used
  standard domain cookies, existing user cookies that have the old domain
  will not be updated. This will result in site users being unable to switch
 
</s> remove ``".example.com"`` (note the leading dot!) for cross-domain cookies, or use
``None`` for a standard domain cookie.
 </s> add ``"example.com"`` for cross-domain cookies, or use ``None`` for a standard
domain cookie. </s> remove ``".example.com"`` to allow a POST request from a form on one subdomain to be
 </s> add ``"example.com"`` to allow a POST request from a form on one subdomain to be </s> remove       ``domain=".lawrence.com"`` will set a cookie that is readable by
      the domains www.lawrence.com, blogs.lawrence.com and
      calendars.lawrence.com. Otherwise, a cookie will only be readable by
      the domain that set it.
 </s> add       ``domain="example.com"`` will set a cookie that is readable by the
      domains www.example.com, blog.example.com, etc. Otherwise, a cookie will
      only be readable by the domain that set it. </s> remove # A string like ".example.com", or None for standard domain cookie.
 </s> add # A string like "example.com", or None for standard domain cookie.
``"example.com"`` for cross-domain cookies, or use ``None`` for a standard
domain cookie.
  
  Default: ``None``
  
  The domain to use for the language cookie. Set this to a string such as
``"example.com"`` for cross-domain cookies, or use ``None`` for a standard
domain cookie.
``"example.com"`` for cross-domain cookies, or use ``None`` for a standard
domain cookie.
  
  Be cautious when updating this setting on a production site. If you update
  this setting to enable cross-domain cookies on a site that previously used
  standard domain cookies, existing user cookies that have the old domain
  will not be updated. This will result in site users being unable to switch
keep keep keep keep replace replace keep keep keep keep keep
 Fixed #28741 -- Removed unnecessary leading dot from cross-domain cookie examples. 
docs/ref/settings.txt