HTML <title> tag
The <title> tag and it's closing </title> tag defines the document title element of a HTML file and is used as the title in the browser toolbar, favourites and search engine results.
The <title> tag is the only required tag of the <head> element.
dir - specifies the directional flow of the content.
<!-- The text will flow from left to right --> <title dir="ltr">Some text here</title> <!-- The text will flow from right to left --> <title dir="rtl">Some text here</title>
lang - specifies a language code for the content of the element.
<title lang="en">Title text here</title>
xml:lang - specifies a language code for the content of the element in XHTML documents.
<title xml:lang="fr">Title text here</title>