Under Windows the option, Windows -> Close All Windows allows the user to close all open Editor and Tracer Windows, but does not reset the state indicator.

This I-beam mimics this behaviour, thus allowing the user to write code which can close all windows before attempting to save the workspace; with the exception of calling 0 ⎕SAVE it is not possible to save a workspace if any editor or tracer windows are open.

Under non-Windows operating systems this is the only mechanism for closing all such windows. This I-beam is effective in RIDE too.

Example

      2023⌶0