Help:Text Directionality
From Proteopedia
RTL (right-to-left) text flow
When writing pages with words on some languages, in special Arabic and Hebrew, text flows from right-to-left (RTL). This is different from the left-to-right (LTR) direction used by most languages in the world. Composing text that contains mixed RTL and LTR words in the same sentence becomes complicated and the result is not always what we expect.
On this sentence, words in English and עברית are mixed, like in ספרים אלקטרונים or printed material.
For this effect, use the Template RTL surrounding the word or sentence that should be displayed with a RTL directionality, as follows
{{RTL | here the text to display }}