[mapserver-dev] draw query output over the map

[yours ever]

Hello all
I am using mapserver with postGIS. everything is working fine.
my requirement is: I want to highlight the query output features through
postGIS over the map i.e rendering the query features.
for example the the intersecting features will take red color after the
query is submitted.
in ArcGIS server there is a graphic layer concept, which allows to add
graphic layer to the map at client end. Similarly there is a note concept
in ArcGIS Explorer.
How this can be achieved in mapserver? after the query a new layer is being
generated , how that can be drawn over the map?
please help
thanks in advance
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