If you mean Default LTR Style and mobile LTR Style

It has been designed for browsing only direction LTR



For the import of Default Style allocated to browse RTL

will find it In a folder setup The name PBBoard-Style.xml

or

will find it In a folder cache The name original_ar_default_templates.xml



mobile style you find it In a folder cache The name original_ltr_mobile-style.xml