[NTG-context] layout for marked pages?

[Pablo Rodriguez]

Dear list,

I have the following sample:

  \showframe
  \setuplayout[width=middle]
  \definelayout[odd][reset]
  \definelayout[even][reset]
  \doiftext{\markedpages[zapf]}
    {\doloopoverlist{\markedpages[zapf]}
      {\definelayout[\recursestring][page]}}
  \starttext
  \dorecurse{50}{\input{knuth}\par}
  \page\startmarkpages[zapf]
    \dorecurse{50}{\input{zapf}\par}
  \stopmarkpages\page
  \dorecurse{50}{\input{knuth}\par}
  \stoptext

I wanted to have page layout in pages marked with zapf.

I thought \markedpages[zapf] was the way to go, but I only get text
after marked pages, not before them.

Which is the right approach to have marked pages with a different layout?

I would be happy to update
https://wiki.contextgarden.net/Page_Layout#Multiple_layouts.

Many thanks for your help,

Pablo