On three dimensional charts, the triad appears in the lower left corner showing the orientation of the three axes for the current view of the chart. The x axis is red, the y axis is green, and the z axis is blue. There is a light blue ball in the triad that indicates the orientation ISO z axis up position of the chart. If you click this ball, it sets your chart to be ISO z axis up, fit to window.
If you move your cursor around the triad, a yellow arrow shows the direction that corresponds to the position of your cursor (+x, -x, +y, -y, +z, -z). If you click the arrow, it changes your chart so that the chart axis indicated by the arrow is facing out.
There are several shortcut keys that can be used when you are viewing a 3D chart:
f – fits the chart to the window
x – displays the x+ view, fit to window
y – displays the y+ view, fit to window
z – displays the z+ view, fit to window
i – displays the chart in the ISO z axis up position, fit to window