TWINDOW
Syntax TWINDOW
 
Explanation TWINDOW outputs the name of the window to which the first active turtle, control, or bitmap is attached. If the turtle is not attached to any window, its output is the empty list. This command is equivalent to the command GPROP FIRST WHO "WINDOW.

Use the SETTWINDOW command to attach a turtle, a control, or a bitmap to a window. 

Examples TWINDOW
Result: GRAPHICS

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