I mean whil editing sprite images.. an option that automatically sets the hotspot on the center of the image..
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Answer is on the Wiki
Rich: edited your link so it works.
I have error 401...
This is correct:
http://apps.sourceforge.net/mediawiki/construct/index.php?title=Hotspot
Without https, but with http
Oops, that's the one... sourceforge keeps catching me out with that, because when you log in it changes to https... hmph!