You can choose the overall color scheme of the app. For example, in the daytime, you may want the app to have a light-colored theme. However, when working at night or in low-light conditions, changing to the dark theme may make the app easier to view. The theme affects all the windows in the app and the surrounding frames.
You can change the size of the text elements in an operation view. For example, when monitoring an operation view on a large, wall-mounted display, you may want to increase the size to make the text easier to read when viewing from a distance. The text size setting affects the titles and descriptions for widgets, as well as the text contained within widgets, such as lists, charts, and legends.
Touch mode makes it easier to use the app on a touch-enabled device, such as a tablet. For example, menus appear larger and have additional spacing around items.