Hi,

> On 26 Aug 2021, at 16:07, Fabrice Couvreur via ntg-context 
> <ntg-context@ntg.nl> wrote:
> 
> Hi, 
> I know I asked the question a few years ago, but I don't remember ! 
> The idea is to test whether the document contains only one page or not. 

Perhaps not the nicest solution, but this works:

\doifvalueelse
  {\lastpage}
  {1}
  {\message{true}}
  {\message{false}}

> If it contains only one page, the header is enabled. 
> If it contains several pages, the header is enabled only on the first page 
> but not on the others. 
> Thanks
> Fabrice
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— 
Taco Hoekwater              E: t...@bittext.nl
genderfluid (all pronouns)



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