Am 02.05.2012 um 15:49 schrieb Procházka Lukáš Ing. - Pontex s. r. o.:

> ... One more question. Let's have three cases - some of them hide the page 
> number on the first page, some of them don't.
> 
> The question is - why:
> 
> ---- 1 - OK, no page number on page 1
> \def\MyPageNumber#1{\doifelse{\pagenumber}{1}{}{\pagenumber}} % Testing 
> \pagenumber
> 
> \setuppagenumbering[location={footer,middle},command=\MyPageNumber]
> 
> \starttext %\noheaderandfooterlines % COMMAND NOT USED
>  \dorecurse{5}{\input knuth\par}
> \stoptext
> ----
> 
> ---- 2 - BAD, page number IS on page 1
> \def\MyPageNumber#1{\doifelse{#1}{1}{}{\pagenumber}} % Testing #1 instead of 
> \pagenumber
> 
> \setuppagenumbering[location={footer,middle},command=\MyPageNumber]
> 
> \starttext %\noheaderandfooterlines % COMMAND NOT USED
>  \dorecurse{5}{\input knuth\par}
> \stoptext
> ----
> 
> ---- 3 - OK, no page number on page 1
> \def\MyPageNumber#1{\doifelse{#1}{1}{}{\pagenumber}} % Testing #1 instead of 
> \pagenumber
> 
> \setuppagenumbering[location={footer,middle},command=\MyPageNumber]
> 
> \starttext \noheaderandfooterlines % COMMAND IN USE
>  \dorecurse{5}{\input knuth\par}
> \stoptext
> ----
> 
> So -
> 
> 1) What exactly does \noheaderandfooterlines do?

It disables the header/footer on the page where \noheaderandfooterlines was 
inserted.

> 2) Why testing the #1 argument in the case 2 doesn't work?

When you use “\pagenumber” you check the numeric value of the counter but when 
you check
against “#1” you check again a formatted version of the pagenumber which can be 
colored or
or even be a roman numeral which you have set with the conversion key.

Wolfgang
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