The scaling of the key can be changed manually by clicking on the arrows below the colour scale.
You may also change the whole scale. By clicking on the unit field, e.g. "" (default setting "N/cm2") you reach the "Define Key" menu.

key

key-settings

With the following functions new keys are defined or pre-defined keys can be accessed and changed. Pre-defined keys are selected via the list field. When clicking on the arrow of the list field the offered possibilities are displayed.