I can give a good format.
Universe Sandbox Forum
-[ Universe Sandbox
-[-[ Suggestions and Feedback
-[-[ Discussion
-[-[ Help
-[-[-[ Technical Support
-[-[-[ Coding
-[-[-[-[ XML
-[ Real Life
-[-[ Games
-[-[-[ Video Games
-[-[-[ Online Games
-[-[-[-[ Online Physics Sandboxes (Like Universe Sandbox, Roblox, Blockland, etc.)
-[-[ Books
-[ Other
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-[-[ Not-Mentioned Topics