Alan Bowen schrieb am 29.05.2020 um 16:53:

Thank you, Wolfgang. That works nicely.

One small detail left: the reference is not interactive.

I have tried \setupreferencing [state=start, interaction=all] but that does not seem to be the way.

minimal file: \setupinteraction[state=start] \starttext \chapter[title=My first, reference=First] \page in chapter 1 on page \getreference[realpage][First] \stoptext

Create a new reference command with \definereferenceformat [getrealpage] [type=realpage] and use it (e.g. \getrealpage[First]) to show the page number. Wolfgang