What command is used to create a new viewport in a layout?

The command used to create a new viewport in a layout is the "MV" command, which stands for "Make Viewport." This command is specifically designed to facilitate the creation and management of viewports in paper space (layout tabs) within AutoCAD. When this command is executed, it allows users to specify the area that the viewport will encompass, providing the flexibility needed to focus on specific parts of the model drawn in model space.

In contrast, other commands do not perform the functions associated with viewport creation. For example, "VP" is often a shorthand for viewport-related actions but is not a valid command to create a new viewport directly. "COPYPERIOD" is unrelated, as it typically pertains to copying elements with a specified period rather than managing viewports. The "VIEWPORT" keyword itself might be associated with viewport settings but is not a recognized command for creating a new viewport.

Thus, understanding the "MV" command and its intended function is crucial for effectively managing layout settings and viewports in AutoCAD.