Greatest "keyCode" value for KeyboardEvent

Does anyone know the greatest possible value the “keyCode” property will return?

I’m mostly worried about international keyboards.

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I’m wanting to release a few KeyboardEvents myself using some rather nifty code (if I may say so myself) and want to make sure there are no future conflicts.

Each of my “special keys” have a unique id numbered sequentially. Is there anywhere I can start my numbering from where I can be safe from conflicting key codes?[/SIZE]