AutoCAD's fundamental entities are lines, polylines, circles, arcs, and text. By combining these entities into blocks and/or groups, you can manipulate more complex objects, such as chairs, mechanical assemblies, trees, or any other organizational designation appropriate to your industry.
Manipulating blocks is an efficient means of working not only because it reduces the number of items requiring selection, but also because blocks can potentially control numerous references from a single definition. In this chapter you will learn how groups are a flexible means of organizing collections of objects, which often include blocks as members. You will also learn how to select and manipulate a group as a whole or access ...