By default, OS X doesn't supply the required dictionaries to spellcheck Arabic, Persian, Urdu, Hebrew or most other non-English languages. So you will need to install them for Katib's spelling features to work nicely with your language. Here's how:
To request other languages please email us at firstname.lastname@example.org.
.dicto your Spelling directory
Goin the menu bar.
⌥to show the
Librarythen click into the
Alternatively: open Finder, press
⇧⌘G then paste
~/Library/Spelling into the box.
Make sure you copy the two files into the Spelling folder (e.g.
ar.dic in the case of Arabic).
This completes the installation process. Now to enable the dictionary:
System Preferences...then click on
Text, and under the Spelling dropdown, choose your newly installed spelling language (e.g. العربية (Library) in the case of Arabic).
This will successfully enable spell checking for that language in all applications that support Apple's spell checking system.
For further information, consult Apple's guide on checking spelling and grammar.
Finally, you need to make sure spell checking is enabled in Katib by choosing
Edit > Spelling and Grammar > Check Spelling While Typing.