/*! \page using_operations_on_groups_page Boolean operations on groups \n In MESH you can perform some Boolean operations on groups, which belong to one and the same mesh.
\anchor union_anchor

Union of groups

This operation allows to create a new group in such a way that all mesh elements that are present in the initial groups will be added to the new one. To union groups:
  1. In the \b Mesh menu select the Union Groups item. The following dialog box will appear: \image html uniongroups.png In this dialog box you should specify the name of the resulting group and set of groups which will be united. For example, we have two groups Group1 and Group2. \n The result of their \b Union will be Group12: \image html image133.gif
    Group1
    \image html image134.gif
    Group2
    \image html image135.gif
    Group12
  2. Click the \b Apply or Apply and Close button to confirm creation of the group.
See Also a sample TUI Script of a \ref tui_union_of_groups "Union of Groups" operation.
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Intersection of groups

This operation allows to create a new group in such a way that all mesh elements that are present in all initial groups together are added to the new one. To intersect groups:
  1. In the \b Mesh menu select the Intersect Groups item. The following dialog box will appear: \image html intersectgroups.png In this dialog box you should specify the name of the resulting group and set of groups which will be intersected. For example, we have two groups Group1 and Group2. \n The result of their \b Intersection will be Group12a: \image html image133.gif
    Group1
    \image html image134.gif
    Group2
    \image html image136.gif
    Group12a
  2. Click the \b Apply or Apply and Close button to confirm creation of the group.
See Also a sample TUI Script of an \ref tui_intersection_of_groups "Intersection of Groups" operation.
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Cut of groups

This operation allows to create a new group in such a way that all mesh elements that are present in the main groups but are absent in the tool groups are added to the new one. To cut groups:
  1. In the \b Mesh menu select the Cut Groups item. The following dialog box will appear: \image html cutgroups.png In this dialog box you should specify the name of the resulting group and groups which will be cut. For example, we have two groups Group1 and Group2. \n The result of their \b Cut will be Group12b: \image html image133.gif
    Group1
    \image html image134.gif
    Group2
    \image html image137.gif
    Group12b
  2. Click the \b Apply or Apply and Close button to confirm creation of the group.
See Also a sample TUI Script of a \ref tui_cut_of_groups "Cut of Groups" operation. */