Require an Old Hungarian layout for ligature capability
There are fonts with ligatures in noto project which required a Zero-with-Joiner key. There are a layout, that is already published layout. New layout need to add with ZWJ, because the basic one already work, ZWJ sign is complicated for user, which don't want use ligatures, but need it for users whoose would like edit books with more beatiful appereance.
Edited by Ghost User