Which feature allows images to be displayed according to the width of the window?

The feature that allows images to be displayed according to the width of the window is known as the "top button fit feature." This functionality typically involves scaling the image so that it fits within the available space, maintaining its aspect ratio without clipping or distorting the image. This is particularly useful for responsive web design or applications where users may be accessing content on various devices with different screen sizes.

By utilizing this feature, users can enhance their viewing experience, as it automatically adjusts images based on the current dimensions of the display area. This responsiveness is crucial for applications that require flexibility in presentation, ensuring that the content is easily viewable without unnecessary scrolling or loss of detail. The other options provided do not pertain directly to resizing images for window dimensions, focusing more on user interaction features or image manipulation tools rather than adapting images for optimal display.