ftp.nice.ch/pub/next/tools/screen/backspace/old/SpheresView.N.bs.tar.gz#/SpheresView/SpheresView.h

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//
// Spheres
//
// Module for BackSpace.app
// 12 Dec 91
// Matt Pharr- pharr@cs.yale.edu
//

#import <appkit/View.h>
#import "Thinker.h"

@interface SpheresView:View
{
	int nDrawn;										// the number of spheres drawn since last clear
}

-oneStep;
-initFrame:(const NXRect *)frameRect;
-drawSelf:(const NXRect *)rects :(int)rectCount;

@end

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.