In Arabic, there may be a wide variety of letter styles; spacing is likely to change with a different font. In Arabic we also have four different forms of every letter according to where it appears in a word. But we also do have some regional variations like the 'ya' you mentioned. Word will support Arabic if you do the following: 1- In your Gmail account open documents and create a word document and write any Arabic word. 2- Go to File and Download as Word & save to your Desktop 3- Open Word in your Mac and open the save file that you created using Gmail. 4- Save as and change the format to Word Template (.docx).