Marking of objects group

For activation of the Group button choose group of objects. In the table of objects specify the first object of group - (SHIFT and the left mouse button) and last object of group - (SHIFT and the left   mouse button). All objects, laying in the table between them, will be marked. For addition or deleting one object from group specify it in the table (Ctrl and the left mouse button). For reset of the marked objects press by mouse any object. All objects of group can be deleted at pressing Delete object button in a toolbar.

By clicking the Group button, you can edit a group of objects.