limiting layer visibility by extent

[Benjamin Wragg]

Hi All,
 
I was wondering if anyone knows if it's possible to limit a layers
visibility by the current extent? E.g if the current extent is within the
layers extent, turn the layer on

I looked around and all I could find was this feature request
http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=786 . It seems like Howard
Butler may have got something going but I can't see mention of it in the
mapfile reference on the site?

Cheers,

Benjamin

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