Data Extents

On the Design right-click menu, in the Project Explorer: Select Setup | Data Extents to either explicitly set the data extents of the Design Window or base those extents on the design data that is currently loaded.

Minimum and Maximum

Use the drop-down controls to specify the 3D coordinates of two points that define the Minimum and Maximum extents of the Design Window.

Calculate

Alternatively, if design data is loaded, a button is enabled which allows you to quickly calculate the data extents from the extents of the currently loaded data. You can then manually adjust the Minimum and Maximum extents, if required.

This option is also available on the Design tab, in the View group, when you select Zoom to Data Extents.

Accept

Click Accept to apply the extents (or Cancel).