It is actually an example built-in of expansion packs.

How to enable

• Go to the game installation folder usually located at C:\Program Files (x86 – \Steam\steamapps\common\Cogs.
• Go to the data Subfolder.
• Copy or rename the ExpansionPackExample.hidden to ExpansionPackExample.txt.

Run the game. It will appear following the End Credits Puzzle:

Inventor mode initial state:

Solved puzzle

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