Arabic modes
Supported on: At least Windows Server 2008 R2 or Windows 7
Registry
HKCU
software\policies\microsoft\office\16.0\word\options\vpref Options
wspell_1112_8 enum - None
->
0 - Strict initial alef hamza
->
1 - Strict final yaa
->
2 - Both strict
->
3
Description
Specifies the spelling rules to use for checking spelling of Arabic text. This option is available only if you are using a right-to-left language version of Microsoft Office or have installed Microsoft Office 2016 proofing tools or the Microsoft Office Single Language Pack 2016 for the language, and have enabled support for the language through Microsoft Office 2016 Language Preferences.