Selection Box (BX)

In Revit versions 2016 and later, the Selection Box (default shortcut “BX”), is your best friend for quickly creating a 3D view cropped to the objects selected.

1. Select one or multiple desired elements in any view.
2. Do one of the following
   a. Press the default shortcut keys “BX”.
   b. In the Modify |Multi Select context menu bar, in the View section, select the Selection Box button.