Hi!
    I'v add a submit command 'brep plot SCV' to draw control point net of a 
nurbs surface.But, I'm not sure it is the nurbs control net that you 
mean,please review it.
    Here is the 
link.https://sourceforge.net/tracker/?func=detail&aid=3528203&group_id=105292&atid=640804
    I can draw lines in mged  using: 
    RT_ADD_VLIST(vhead, pt1, BN_VLIST_LINE_MOVE);
    RT_ADD_VLIST(vhead, pt2, BN_VLIST_LINE_DRAW);
    but the  RT_ADD_VLIST(vhead, pt1, BN_VLIST_POINT_DRAW) seems 
unavailable.SO,How to plot a single point in mged?
Cheers!
Laijiren
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