The View menu supplies buttons for hiding/showing various parts of the mgv user interface; for convenience, the entries in the window menu are duplicated in the popup menu. The following items are available:
This hides or shows the Ghostscript message log.
This hides or shows the page list. If you have deactivated both page labels and page numbers from the Page menu, un-hiding the page list will turn on page numbers so it has something to display.
This hides or shows the status line.
This hides or shows the menu bar. Note that the menu bar and the accelerator keys are still active even when the menu bar is hidden--hiding the menu bar only places it underneath the main viewing window (this is sneaky but it works just fine).
Hide or show the tool bar.
This will close all of the existing zoom windows.