The documentation and its translations reside in subdirectories. When building the documentation, the generated HTML files are placed in subdirectories of the 'HTML' directory. IMPORTANT: Do NOT place sensitive files under 'HTML'! It is for generated documentation only. The whole directory tree is wiped out by the Makefile when running 'make distclean' or 'make clean'. Adding new translations ~~~~~~~~~~~~~~~~~~~~~~~ 1) Create a new subdirectory and copy the XML files there. main.xml must not be copied, it is autogenerated. 2) In each translated file after the tag you must put a note like , where 2 is the revision of corresponding English file (see comment at the top of file). That's all, in theory.