Show HN: Katib – A Markdown Editor for Arabic, Urdu, Farsi and Hebrew Posted by aiaf on Tuesday November 04, 2014 @08:31AM from the show-hn dept. http://katibapp.com/ ( 5 comments | 22 points | on HN )
Additionally, you can use the "Keyboard Viewer" when Arabic is selected as a keyboard layout and hold shift. This will show you which keys render diacritics.