Much thanks Florent. It works really well, perhaps you should add it to wiki.

On Wed, Sep 25, 2024 at 3:52 AM Florent Michel <florent.m42@gmail.com> wrote:
>
> Hi,
>
> After looking at it a bit more, one solution can be found in the accepted answer to this question: https://tex.stackexchange.com/questions/108676/page-numbers-roman-number-and-arabic-numerals-in-context
>
> The following example is slightly adapted from Marco's answer:
>
> ```
> \usemodule[ipsum]
>
> \definesectionblock[roman][romanpages]
> \definestructureconversionset [roman:pagenumber] [] [romannumerals]
>
> \startsectionblockenvironment [bodypart]
>   \setcounter [userpage] [1]
> \stopsectionblockenvironment
>
> \starttext
>   \startstandardmakeup
>     \placecontent
>   \stopstandardmakeup
>   \startromanpages
>     \section{Roman numeral pages}
>     \dorecurse{6}{\ipsum\par}
>   \stopromanpages
>   \startbodymatter
>     \section{Arabic numeral pages}
>     \dorecurse{6}{\ipsum\par}
>   \stopbodymatter
> \stoptext
> ```
>
> The page numbers look correct in Okular.
>
> Best regards,
> Florent
>
> Le mar. 24 sept. 2024 à 19:50, Florent Michel <florent.m42@gmail.com> a écrit :
>>
>> Hi,
>>
>> I do not know how to do that properly (if someone has a solution, I'd also be interested), but here is something which seems to give a partial solution:
>>
>> ```
>> \usemodule[ipsum]
>>
>> \starttext
>>
>> \placecontent
>>
>> \section{Section 1}
>>
>> \dorecurse {6} \ipsum
>>
>> \pagebreak
>>
>> \section{Section 2}
>>
>> \def\romanpage{\convertnumber{romannumerals}{\userpage}}
>> \setupuserpagenumber[
>>     numberconversion=romannumerals,
>>     viewerprefix=\romanpage -,
>> ]
>>
>> \dorecurse {6} \ipsum
>>
>> \stoptext
>> ```
>>
>> In section 2, pages are shown with roman numerals in the document and as (roman numerals)-(arabic numerals) in the outline with Okular and Evince. I don't know how to get only the first part, though.
>>
>> Best regards,
>> Florent
>>
>> Le mar. 24 sept. 2024 à 17:20, Shiv Shankar Dayal <shivshankar.dayal@gmail.com> a écrit :
>>>
>>> > Did you try a different PDF viewer? The display of the PDF outline
>>> > probably depends on the viewer.
>>>
>>> I used Evince and Okular(I am on Linux) and both work for LaTeX
>>> generated pdfs.
>>>
>>> > Maybe try
>>> > \enabledirectives[references.bookmarks.preroll]
>>> > or
>>> > \setupheads[expansion=yes]
>>>
>>> Tried both but they do not work.
>>>
>>> --
>>> Respect,
>>> Shiv Shankar Dayal
>>> ___________________________________________________________________________________
>>> If your question is of interest to others as well, please add an entry to the Wiki!
>>>
>>> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
>>> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
>>> archive  : https://github.com/contextgarden/context
>>> wiki     : https://wiki.contextgarden.net
>>> ___________________________________________________________________________________
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
> ___________________________________________________________________________________



--
Respect,
Shiv Shankar Dayal
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________