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Introduction

  These functions allow you to perform CAD operations. You can draw with
  the mouse, scale objects, delete objects, move objects, and more.

  While these functions cannot create a full-featured CAD program, such as
  AutoCAD, they can allow you to create a CAD-like interface for drawing
  and manipulating objects.

  All of the graphics created with these functions are vector graphics, which
  means that they can be printed at resolutions higher than the screen
  resolution.