@RobotHeadArt, @Mythico : Your idea will be very useful. In the interface, each values has limits. These limits are just here to avoid instabilities but they never have been described precisely. In the new version I will try a define some behaviours even if I don't know if I will name them as existing materials. A great work on the program and on the documentation.

@Mythico : I will look at the problem you have had.

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