Each multi-view block in a drawing is based on a multi-view block definition. The multi-view block definition specifies the display representations in which the block can be viewed, and the views available in each representation. From a multi-view block definition, you can create as many actual multi-view block references as you need.
Multi-view blocks typically represent 3D Civil objects. For example, you can create a customized, multi-view fire hydrant representation by drawing plan, elevation, and model views, and save each view as an individual AutoCAD block. You assign each block to a view when you create the multi-view block definition. The blocks (top, bottom, front, back, left, right, and model views) are used to define the custom object as a single multi-view block. By adding points to your views on the defpoints layer prior to defining the block, you can identify additional insertion points for the view block. You set the display representations and view directions when you define the multi-view block.
You can see the individual blocks of your custom object in plan, elevation, and isometric views as one assembly after inserting them in the drawing as a multi-view block. For more information about working with blocks, see the online AutoCAD User's Guide.