What is the third parameter in \useURL for?

What is the third parameter in \useURL for?

[John R. Culleton]

For \useURL the first parameter identifies the statement, the
second defines the url, the third is usually blank and the fourth
gives the text to appear in the clickable area.

What is that third parameter for? 


-- 
John Culleton
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Re: What is the third parameter in \useURL for?

[Henning Hraban Ramm]

Am 2006-03-24 um 00:59 schrieb John R. Culleton:

> For \useURL the first parameter identifies the statement, the
> second defines the url, the third is usually blank and the fourth
> gives the text to appear in the clickable area.
>
> What is that third parameter for?

http://texshow.contextgarden.net/ts.rb?what=desc&if=en&cmd=useURL
says "attached file URL"

The one sample using it is:
\useURL
   [setuppositioning]
   [http://texshow.contextgarden.net]
   [cmd=setuppositioning]
   [\tex{setuppositioning}]

I didn't test anything.



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Hraban
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