Which are the tools used in CAD, instead the classical ones (pencil,eraser,ruler, rapporteur, compass)?

CAD has a great number of tools from which we can enumerate:

-Automatic generation of graphics: text in various formats, simple graphics entities (rectangles, regular polygons, ellipses) or complex graphics entities;

-Copying or moving graphics elements on the drawing; -Automatic multiplication of graphic elements in circular or rectangular arrays;

-Saving design in electronic form and the possibility of  transfer it to another user on a CD or by Internet;

-Creation and running of programs in different programming languages to eliminate routine work.