# Viewing Geometrical Objects

Newly created geometrical objects are automatically displayed in the OCC 3D Viewer.

OCC 3D Viewer is described in the documentation on GUI module.

After the object has appeared in the Viewer, you can select it with left mouse click to change its presentation parameters and access to other useful options by right-clicking on the selected object.

- Rename - allows to change the name of the geometric object.

- Display Mode - allows to select between Wireframe and Shading presentation.

- Color - allows to change the filling color in the standard Select Color menu.

- T ransparency - allows to change the transparency of mesh elements.

- Isos - allows to change the number of isolines displayed within a shape.

- Erase - allows to hide the selected mesh from the viewer. TUI Command : sg.EraseOnly(ID)

- Erase all - allows to hide all objects from the viewer. TUI Command: sg.EraseAll()

- Display Only -allows to display only the selected mesh, hiding all other from the viewer. TUI Command: sg.DisplayOnly(ID)

- Update - refreshes the presentation of your mesh in the Object Browser, applying all recent changes.

- Dump view - exports an object from the viewer in bmp, png, jpg or jpeg image format.

- Change background - allows to redefine the background color. By default it is black.

Some of these functionalities are available through right-clicking on the viewer background:

- Select Only provides a filter for exclusive selection of objects of a certain type.