- Control **Add elements that share the same topology** allows to add automatically all elements laying on the same topology that was selected and remove these elements if they have disappeared due to the parametrical update. They will be represented as one line in the list of selection and managed in the viewer as one object if this flag is enabled. If flag becomes disabled when such elements are already in the list, they will become divided in one line per one shape.
- Control **Add elements that share the same topology** allows to add automatically all elements laying on the same topology that was selected and remove these elements if they have disappeared due to the parametrical update. They will be represented as one line in the list of selection and managed in the viewer as one object if this flag is enabled. If flag becomes disabled when such elements are already in the list, they will become divided in one line per one shape.