Displays a list of all open drawings, and the layouts contained in the current drawing or the selected drawing when more than one drawing is open.
Access
Button
Toolbar: Status bar 
Show Drawings & Layouts Toolbar: Status bar Model/Layout drop-down Show Drawings & Layouts 
Command entry: Cmd-.Summary
Displays the QuickView dialog box.
Drawing previews are displayed vertically along the left, while the layout previews of the selected drawing are displayed on the right. The preview for Model is always located in the top-left of the layout previews.