On Thu, 2012-04-19 at 23:53 +0200, Wolfgang Schuster wrote:
> \setupinteraction[state=start]
> 
> \starttext
> This is a cow: \goto{\externalfigure[cow][height=2ex]}[url(http://en.wikipedia.org/wiki/Cow)]
> \stoptext

Thanks Wolfgang. I added it to the wiki:
http://wiki.contextgarden.net/Using_Graphics#Picture_with_hyperlink

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Kip Warner -- Software Engineer
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