With this calculation option you can easily draw simple diagrams with only an element and H2O as well as more complicated diagrams with several elements.
The dotted cyan lines indicate the stability area of water. Stability regions of ions can be outlined with blue lines, if necessary. Concentrations of the elements as well as scale settings can be changed by pressing the Menu button.
High-resolution paper copies can be produced by pressing Print BW or Print Col buttons, as with the other calculation options.