Arbortext IsoDraw > User's Reference > Menus > Element Menu > 3D Transformation > Tools in the Toolbar > Extent Tool
  
Extent Tool
To obtain an overview of all the elements, the entire drawing can be brought into the field of vision. Clicking the Extent tool displays the entire drawing on the screen.
If you first align the drawing on the coordinate system with the Center elements tool you can easily create an overview during your work.