How to add new directory in the handbook structure?

[RayCherng Yu]

Dear all,

I start to contribute the translation of the FreeBSD Handbook to
Traditional Chinese for 3 months.
The Traditional Chinese Handbook Project is abandoned for several years. It
is outdated. Comparing to the English version, it lacks some chapters.
I updated the chapters.ent and sent problem report.
But I don't know how too add new directory in the zh_TW.UTF-8 handbook
directory?
I copy the new directory from en_US.ISO8859-1 version to zh_TW.UTF-8
handbook directory and change the encoding in chapter.xml in each directory.
It don't work.
How should I do?

Thanks and Best Regards

RayCherng