| UPDATED: "retop.nod" & image 
Hi Barry,
 
Please find attached nod file with new macro for U&V isocurves 
and points at their intersection.
 
Image below shows surface faceted & point mesh to extents.
   
Also Karsten mentioned that he had developed a "network" node that  
combined with "retop" macro U&V outputs will retopologized input surface. 
I will incorporate "network" node within the macro, once it is delivered.
 
James |