[gradsusr] How to view only one contour value thicker?

Sat Aug 22 08:43:50 EDT 2015

Hi, I am displaying Lifted Index as 'gxout contour' in GrADS 2.0.2, and all is great. But I would like the value "0" to be thicker than the others, to mark the "boundary" between positive and negative contour labels values.How should I do?
Thanks,Giacomo 		 	   		  
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