Here, the hreflang attribute indicates that the linked document is in English:
The hreflang attribute specifies the language of the text in the linked document.
This attribute is only used if the href attribute is set.
Note: This attribute is purely advisory.
Note: The hreflang attribute does not render as anything special in any of the major browsers. However, it can be used by search engines, or in scripts.
|language_code||A two-letter language code that specifies the language of the
To view all available language codes, go to our Language code reference.