/usr/share/dx/ui/imageWindow is in dx 1:4.4.4-9+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | The Image window displays the result of a visual program. If the Image tool has been used to generate the image, then you can interact with the image by using the View Control options in the Options menu of the Image window.
To load a new visual program, use Open Program from the File menu.
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