Taskbar button grouping overview
The taskbar can become crowded with buttons when you are working with multiple programs at the same time. For this reason, Windows provides a feature to help you manage a large number of open documents and program items.
The taskbar button grouping feature works in two ways. First, taskbar buttons for documents opened by the same program are always displayed in the same area of the taskbar so you can find your documents easily.
Second, if you have many documents open in the same program, Windows combines all the documents into one taskbar button that is labeled with the name of the program. A triangle on the right side of the button indicates that many documents are open in this program. The single button provides access to all the open documents.
To access one of the open documents, click the triangle on the taskbar button, and then click a document name in the list. To act on all the open documents at the same time, use the right-click menu. For example, right-clicking the triangle gives you a menu that lets you close all the open documents.
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