Visualization Area
At the program start, the Visualization area (also named viewport) shows the GeoDict splash screen. When structures or result fields are loaded in GeoDict, they are shown in the Visualization area and the View Controls panel appears above it.
In the Visualization area, the Material Legend shows information on the colors and materials IDs used for the objects in the structure. GeoDict’s material concept and the material database are described in the Material Database handbook.
The colors for the materials can be changed through Settings → Visibility & Color Settings, through the icon 
in the toolbar, or by unfolding the Color & Visibility tab of the GUI Sidebar, as described in the Color & Visibility chapter.
The material IDs can be changed through Settings → Select Constituent Materials… in the menu bar or the 
icon in the toolbar.
2D Cross Section
In 2D cross section view, the Visualization area shows a slice of the current image of a structure or result field and the positioning of the Camera can be set in the View Controls, with the controllers of the 2D view, under their tabs.
At the bottom of the Visualization area, the Status Bar shows information about the visible slice and direction. When switched on, a scale bar shows the physical size of the visible image. The position and visualization of the visualization area elements can be changed under Legends and Overlays.
Additionally, the visualization of the structure or result field can be changed as described in the following.
in the Camera tab. 3D Rendering
In the Visualization area, below the View Controls, the Material Legend shows information on the colors and materials IDs used for the objects in the structure. The domain axes can be found in the bottom left visualizing how the structure is rotated. If additionally volume fields are loaded, the corresponding legend appears on the right. The positions of the visualization area elements can be changed as described under Legends and Overlays.
Additionally, the visualization of the structure or result field can be changed as described in the following.
icon in the toolbar. Then, a beam spot appears in the Visualization area near the structure model. Move the mouse with the left mouse button pressed to observe the changing position of the light source. The beam spot disappears after clicking the 
icon in the toolbar and moving the mouse.