XChange          1472 core/gui_draw.c     int XChange, YChange;
XChange          1480 core/gui_draw.c     XChange = YRadius*YRadius*(1-2*XRadius);
XChange          1503 core/gui_draw.c         if ((2*EllipseError + XChange) > 0 )
XChange          1507 core/gui_draw.c             EllipseError += XChange;
XChange          1508 core/gui_draw.c             XChange += TwoBSquare;
XChange          1513 core/gui_draw.c     XChange = YRadius*YRadius;
XChange          1540 core/gui_draw.c         EllipseError += XChange;
XChange          1541 core/gui_draw.c         XChange += TwoBSquare;