> Tomas Hala <mailto:tomas.hala@mendelu.cz>
> 11. April 2018 um 19:36
> Hello,
>
> I have got a document with e.g. six chapters, numbers are from 1 to 6.
> At special places I would like put a special page containing a special 
> title.
> The special page should be without a header and without any number,
> the title should be put into the contents by the same way as other 
> chapters..
>
> I came across two problems:
>
> First, in the minimal example below I get chapter numbers 1, 2, 4, 5, 7, 8
> and if I use incrementnumber=no, the "specialpage" is not stored in 
> the contents.
>
> Secondly, I do know how to switch off the header only at this special 
> page.
>
> I also tried \definehead[specialpage][title] but in this case the 
> "specialpage" is not stored in the
> contents, too.

Like this?

\definehead [specialpage] [chapter]
\definehead [levelA]      [chapter]

\setuphead
   [specialpage]
   [incrementnumber=list,
    header=empty]

\starttext

\placelist[levelA,specialpage]

\levelA{A1}
\levelA{A2}
\specialpage{Special page 1}
\levelA{A3}
\levelA{A4}
\specialpage{Special page 2}
\levelA{A5}
\levelA{A6}

\stoptext


Wolfgang