If the toggle is switched to "On", the algorithm is allowed to reduce fixed displacements which aren't necessary to withstand the boundary conditions.
Therefore, fixed displacements need to be created as separate items.
If Reduce fixation points is deactivated, each fixation will be part of the new design.
If Reduce fixation points is activated, the optimisation algorithm is allowed to reduce them accordingly.
The deactivated Fixations and Non-Design Spaces can now be reduced. They can also stay part of the new design if they are needed. If all Constraints and related Non-Designs are deactivated, at least one will stay and cannot be reduced.
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