Pane
Pane
The part of the browser window that displays the content of the web page, including images and text, is called the "viewport." This area allows users to view and interact with the website's content. It is essentially the window through which the web page is rendered and presented to the user.
window
window
window
A pane is a rectangular area within a window that usually displays a portion of the overall content or information. Panes are used in user interfaces to organize and present information clearly to users.
If you are referring to the title at the top of the window it is called a "Title Bar"
A window
Meow
Name Box
When a window is open, you can typically find features such as an active title bar displaying the window's name, a close button for exiting the window, and a minimize button to reduce its size on the screen. Additionally, there may be a resize handle in the corner, allowing users to adjust the window's dimensions. Often, the content area of the window displays the relevant information or application interface.
area near the top of the worksheet window that displays the contents of the active cell