Trend objects allow you to define and manage a different scale for each configured pen, as described in "Configuring pens (Pens tab)"; at startup, the scale relative to pen 1 is displayed by default. Clicking on the line relative to one of the sixteen pens in the legend, the animation displays the scale of values relative to the selected pen.

The activation of a pen (and therefore of the relative scale) can also be carried out by means of an animation or a keyboard event suitably configured as described in "Controlling the trend by means of Animations or Events from the Keyboard".