Changing map file params via URL

[Stephen Davies]

G'day again.

I have read the map file doco on this topic and seen a number of posts 
requesting information but cannot see the answers that I need.

Several people have asked about using map_reference_image to dynamically 
change the reference image. Is this possible? (I cannot get it to 
work.) Similarly, I want to use map_reference_extent.
If this option is not available, what other alternatives exist (apart 
from dynamically creating a new, temporary map file.)

Is there a definition of "virtually any map file value"?

Cheers and thanks,
Stephen
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Stephen Davies Consulting                            Voice: 08-8177 1595
Adelaide, South Australia.                             Fax: 08-8177 0133
Computing & Network solutions.                       Mobile:0403 0405 83
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