![Giant Editor 5.0.3 Giant Editor 5.0.3](http://www.fs-modbox.com/_ld/26/2674.jpg)
64-bit version of the Editor is now available at the same link as above.
The user attributes panel is typically not visible if you open the editor for the first time. So go to Windows->User Attributes. Select an object in the scenegraph to see its user attributes. User Attributes can be defined in the editor and then be used in the engine (eg. Within a script).