[NTG-context] page references (varioref)

[Peter Münster]

Hello,

I tried to implement something like the LaTeX varioref package, but without
success.
In detail: I would like to create a command like \at[], say \VarioAt[],
that outputs a text in function of the page-number, for example:
* if page is the same as the current page: "on the current page"
* if page is next page: "on the following page"
* if page is previous page: "on the preceding page"
* else "on page XX" (XX is page-number)

I tried with something like
\doifelse{\expanded{\at[myRef]}}{\expanded{\currentpage}}%
  {same page}{different pages}
But it seems, that this does not work... :(

Could you help please?
Greetings, Peter

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