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It is relatively simple to adjust axis limits during run time using the 'ini' hal pins. However this only allows adjusting the extents of the box that defines the overall work space of the machine. ie you will not be able to cut a cube out of a corner, let alone cut a cube out of the inside of the work space.
Axis gui has a feature that checks the extents of the loaded gcode for limit violations which could probably be modified to check for exclusion zones but this will not include jogging or mdi commands.

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As an alternative you could monitor the axis positions in hal and stop motion if they enter an exclusion zone. This would work for auto, manual and mdi modes but would not give you a warning before the machine actually reaches those limits.

ok, so I would have to look into the handwheel hal to find some accelleration vaues to play with?

Yes, you're right, the problem is with languages/localizations. I installed it in English, there are no problems, it works perfectly. Localization is not necessary for operation. Thanks a lot, Tommy.