I now have the opportunity to expend my website into Arabic, but I have a major problem Western text is Left to right whereas Arabic is Right to left. When I copy the text sent to me in Arabic, it copies the text wrong. The template start as below...

<!doctype html>
<meta charset="UTF-8">
<meta http-equiv="content-language" content="ar">

I have been informed, maybe misinformed, that within HTML 5 the last line above is not valid, also the DIR= is also redundant, therefore what is the right code to overcome this annoying issue?