ftp.nice.ch/pub/next/science/mathematics/HippoDraw.2.0.s.tar.gz#/HippoDraw/Hippo.bproj/Draw.subproj/graphicsUndo.subproj/GridChange.h

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@interface GridChange : Change
{
    id		graphicView;
    int 	oldSpacing;
    float 	oldGray;
    BOOL	oldVisible;
    BOOL	oldEnabled;
    int 	newSpacing;
    float 	newGray;
    BOOL	newVisible;
    BOOL	newEnabled;
}

- initGraphicView:aGraphicView;
- (const char *)changeName;
- saveBeforeChange;
- undoChange;
- redoChange;
- (BOOL)subsumeChange:change;

@end

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