Append object into a set

This mode serves for creation of objects set or for addition of the new object into a present set.  For this purpose it is necessary to produce consecutive choice of objects.

For operation's completion it is necessary to click Left + Right or Ctrl + Enter, not making any choice.

At creation of a new set the first selected object is assigned as the main, the rest - as subordinate. If at consecutive choice of the object an object of a set met, it (this set) can be united with the current set. For this purpose it will be necessary to select one of the proposed uniting variants.

You can cancel execution of the operation by using Ctrl + Right keys or after closing the mode by Undo button.