Index: agent.h===================================================================RCS file: /nfs/jade/vint/CVSROOT/nam-1/agent.h,vretrieving revision 1.20diff -u -r1.20 agent.h--- agent.h	16 Jun 2001 01:53:10 -0000	1.20+++ agent.h	7 Feb 2005 20:25:16 -0000@@ -70,7 +70,7 @@   inline double width()  {return width_;}   inline double height() {return height_;}   virtual void findClosestCornertoPoint(double x, double y, -               double &corner_x, double &corner_y) const = NULL; +               double &corner_x, double &corner_y) const = 0;    virtual void place(double x, double y);   void label(const char* name, int anchor);   void color(const char* name);