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Note: To apply selection filters you can also use the Selection window (see Selection window (only Preprocessing)).
Some options are only available depending on the type of entity to be selected:
MinLength and MaxLength can be used either in geometry lines or in elements (on the mesh referred to the edge's length).
BadMinAngle, BadMaxAngle, ShapeQuality, MinJacob are quality measures for mesh elements
NumSides=x can be used for surfaces or volumes, to filter the entities with exactly x number of sides.
Material and Condition could be used only in case that a problemtype has been loaded and materials or conditions were defined.
For example, the following command:
filter:HigherEntity=1
means that only the entities that have higher entity equal to one will be selected.
Note: A typical use of filter is to select only boundary lines (higher entity=1).