You can use this functionality to zoom in or out, the layout space shown in the 3D view or a separately displayed component (mounting panel, mounting rail, etc.).

1. Select the menu items View > Zoom > In/Out.
   
   The view zooms in or out, step by step, starting from the position of the coordinate system.
2. Hold the cursor over the 3D view and turn the mouse wheel forward or backward.
   
   The view zooms in or out, step by step, starting from the cursor position.

This functionality generates different orthogonal (top, bottom, left, right, front, rear) or isometric views (south-west, south-east, north-east, north-west) of your layout space. The designations of the four isometric viewpoints determine the orientation from which the model is viewed. Additionally, the viewpoint is rotated 60° downwards.

1. Select View > 3D viewpoint.
   
2. Select one of the available views from the submenu.

With this functionality, you can change the viewing angle of the graphic by moving the mouse.

1. Select the menu item View > Rotate viewpoint.
   
2. Click in the 3D view and keep the left mouse button pressed.
3. Holding the button down, move the mouse in the direction in which the viewing angle is to be changed.
   
   The display in the layout space follows the movement of the mouse, and rotates in the corresponding direction.

With this functionality, you can reduce the detail shown in the graphic of the parts placed in the layout space. You can set which items are to be shown in a simplified representation in the Settings: 3D dialog:

• Terminal strips (block definition)
• 3D macros.

These settings apply to all items already placed and to all subsequently placed items.

1. Select the Simplified representation popup menu item in the layout space navigator.
   
   3D macros are replaced by rectangular bodies in the dimensions of the items previously used. Terminal strips are combined into a block; the individual terminals are no longer displayed. The labeling of the terminal strip is displayed instead of the labeling for the individual terminals. The position of the components placed on the items does not change.

The default colors for the background to the 3D view can be set individually. You can specify a single color or two colors, between which a horizontal color gradient is generated.

1. Select Options > Settings > User > Graphical editing > 3D.
   
2. In the Color selection group box, use [...] in the Shading - Background 1 and Shading - Background 2 fields to open the Color selection dialog.
3. Select the desired colors.
   
   If you have selected two different colors, the background will be drawn with a color gradient. The first color defines the starting color in the upper window pane and the second color stands for the end color in the lower window pane.
   
   If you have selected two identical colors, the background will be drawn with one single color.

Drilling view refers to the display of all mechanical working steps (designs). This does not concern manually placed cut-outs.

1. Select the menu items View > Drilling view.
   
   The transparency of all part placements is set to 50%. All drilling patterns stored on the parts are displayed on the mounting surfaces where they have been placed. The visualized drilling patterns fully penetrate the components below to be drilled, which becomes clear in the side view.
   
   
2. Again select the View > Drilling view menu items to hide the drilling view.