[NTG-context] Chapters with parts

[Taco Hoekwater]

Marcus Vinicius Mesquita de So wrote:
> Hi!
> 
> I'm typesetting a book with chapters with parts, such as:
> 
> Chapter 25-I
> Chapter 25-II
> Chapter 25-III
> Chapter 25-IV
> 
> Chapter 26
> 
> Chapter 27-I
> 
> How can I achieve this in ConTeXt?
> Thanks in advance for any help!

Ik hou don't know in advance what type of numbers you need,
then perhaps it is easiest to use:

   \setuphead[chapter][ownnumber=yes]

   \chapter{25-I}{...Title...}

Greetings, Taco