NLS in SQL Anywhere 16

I'm relatively new to SQL Anywhere, so my apologies in advance for any obvious questions.

I have a potential customer who is using an older version of SQL Anywhere, and wants to know about version 16 national language support (NLS).  They specifically asked about Chinese, Thai, and Vietnamese.

Referring to the product documentation here: http://dcx.sybase.com/index.html#sa160/en/dbadmin/language-locale-natlang.html

It appears that both traditional and simplified Chinese, along with Thai, are supported.

So, two questions:

1. Am I looking at the right place to understand the NLS in SQA?
2. Is there any way to support Vietnamese?

Thanks in advance for your help!

Regards, Derek