extern double CursorScaleFactor;
extern int PlotGridX, PlotGridY, PlotGridXdefault, PlotGridYdefault, CursorCPos, CursorDPos, GridOffset;
extern double CursorScaleFactor;
extern int PlotGridX, PlotGridY, PlotGridXdefault, PlotGridYdefault, CursorCPos, CursorDPos, GridOffset;