File → Close (Ctrl+F4) : Closes only the selected tab. All other tab instances remain.

File → Close All (Ctrl+Shift+F4): Closes all opened documents. If a document is modified or has no file, a prompt to save, not to save, or cancel the save operation is displayed.

Close - accessed by right-clicking on an editor tab: Closes the selected editor.

Close Other Files - accessed by right-clicking on an editor tab: Closes the other files except the selected tab.

Close All - accessed by right-clicking on an editor tab: Closes all open editors within the panel.