It is not really parse syntax error but it is clever hack to avoid editing long .lang files,
Basically they are running software from here [url removed, login to view]
the url of their website is here
Basically when you are adding categories it only allows you to add categories in english and not translate them.
See attached file on .lang files for categories,
They want simple system where when they add categories they can translate them into other languages.
See picture, It is clever hack to make your life easier and theirs.
Please see attached pictures,
this should be for every category from main > subcategory > sub sub category.
I hope you get me,
It is quite easy we believe for a good coder.
The [url removed, login to view] file is attached so you can see how to do it.
Other pictures are included too.