I have completed the correction of Vietnamese translation of the interface (vi.po). The file can be found here (https://github.com/hoangduytran/blender-internationalisation/blob/master/trunk/po/vi.po). Can you please instruct me how to upload changes to 2.79 branches, please. I also wanted to propagate changes to 2.8 branches and complete all the untranslated strings in that version as well. At the same time, please add Vietnamese entry for the Blender's reference manual and guide me to download the source so I can start translating it. I have forgotten how to update changes to PO file, so please give me clear guidance on that. Thank you in advance.