Using Named Presentations is a convenient way to represent a 3D element with different symbolic representations (plan, front elevation, side elevation, isometric and so on), in different view orientations of the model. For example, in the image below you will see the different representations of a door in different view orientations.
Named presentations are applied to different elements in the door cell file. After the door is placed as a parametric cell in a design, depending on the view orientation, elements in the corresponding named presentation will display. Top view will show the door in plan, Front will show the door in elevation and Isometric will show the door in isometric view.
Perforators are 3d elements which when placed within another 3d element, will create a cut. If you take the example of the parametric door above, the door creates a cut in the wall where it is placed. This cut is the door opening in the wall which adjusts as per the door’s variations. If you change the door location along the wall, the cut (door opening) also moves with the door. If you remove the door, the cut is removed too.
Now let us see the steps to create a parametric door which acts as a perforator when placed on a wall and has named presentations associated: