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The “gui” game object contains a GUI component stored in the file pointer_over.gui. The GUI contains
the setup with the “button” box node for the button image and the “text” text node for the button label text.
pointer_over.gui has a script attached to it, called pointer_over.gui_script, which contains the button logic.
If you want to play with these examples, you can get the project on Github.
Do you want to see more examples? Why not write a few yourself and submit a pull request? We love contributions.