What is this Windows Vista/7 window doing on the wall in episode 3 of Re-Kan? Around 17 seconds into episode 3 of Re-Kan!, there is this weird window (as in GUI element) from Windows Vista or Windows 7 on the wall of the classroom.



Another screenshot at around 07:22 in episode 1, showing the window in the lower right corner.



Looking through all 3 episodes which are aired so far, the charts and the weird window are consistently animated. While the animation is consistent, the choice of article to place on the wall is still weird. The window element looks completely out of place.

Is this an animation mistake?
It's a screenshot from LMTOOLS by Flexera Software. As it's a tool for working with a software licencing management server, I think you're right and it's out place on the wall of an average Japanese highschool.  It hard to see such a specialized tool being the subject of instruction, and the screenshot alone stuck to a wall wouldn't serve any purpose.

I'm guessing the screenshot was grabbed from the Internet somewhere. Like this one I found on as part of a FAQ entry on using the tool: