Scrolling

X and Y axis scaling in both 2D and 3D graphs can be adjusted using the mouse wheel. $<$wheel-up$>$ scrolls up (increases both YMIN and YMAX by ten percent of the Y range, and increases both Y2MIN and Y2MAX likewise), and $<$wheel down$>$ scrolls down. $<$shift-wheel-up$>$ scrolls left (decreases both XMIN and XMAX, and both X2MIN and X2MAX), and $<$shift-wheel-down$>$ scrolls right. $<$control-wheel-up$>$ zooms in toward the center of the plot, and $<$control-wheel-down$>$ zooms out. $<$shift-control-wheel-up$>$ zooms in along the X and X2 axes only, and $<$shift-control-wheel-down$>$ zooms out along the X and X2 axes only.