The system variable :CURRENT.WINDOW contains the name of the currently active window. This is the selected window to which all keyboard and mouse input is directed. Setting the value of :CURRENT.WINDOW to the name of a different window causes that window to become the selected window. SETACTIVEWINDOW may also be used to set the currently active window. ACTIVEWINDOW reports the currently active window.

A list of available windows may be obtained with the EVERY "WINDOW command. When Logo starts, available windows are TOOLBAR COLORPICKER TOOLBOX GRAPHICS LISTENER and WORKSPACEVIEW.