The modelling of the build constructions in a CAD of the renovation of   the enterprises by means of units in the drawings
  The parametric model of build constructions and features of design operations are described for making drawings, which are the common component of the different parts of the projects of renovation of enterprises. The key moment of the deep design automation is the using of so-called units in the drawings, which are joining a visible graphic part and invisible parameters. The model has passed check during designing of several hundreds of drawings 
Vladimir V. Migunov