Adjusting the scale
The scale of the ternary diagram and logratio plot can be changed by
selecting Options → Settings.
The default scale of the logratio plots goes from -1 to 6 on both axes, but can be
automatically set to display the sample data at optimal resolution, or changed
to any other values. The same goes for the helium scaling factor, the default
value of which is 100. The age contours are automatically
adjusted to the new scale.
See Scale, Colours