Chapter 1 AutoCAD Fundamentals ­ Part I So now you've created the four basic shapes used in AutoCAD drawings (and ended up with a lot of junk). Let's erase all of them, and get back to a blank screen. In order to do this we need to introduce Tip #2, which is quite easy to just type. Notice the use of the "e" abbreviation; we will see more of this as we progress. TIP #2: To quickly erase everything on the screen, type in "e" for "erase", press Enter, then type in "all". Then press Enter twice. After the first Enter all the objects will be dashed, indicated they were selected successfully. The second Enter finishes the command by deleting everything. Needless to say, the above command sequence is useful only in the early stages of learning AutoCAD, when you do not intend to save what you are drawing. You may want to conveniently forget this particular tip when you begin to work on a company project! For now it's very useful, but we will learn far more selective erase methods later. So let's put all of this to good use. Create the drawing shown below. Use the rectangle, line, circle and arc commands. Don't get caught up trying to make everything line up perfectly, just do a quick sketch. Then you can tell everyone that you learned how to draw a house in AutoCAD within the first half-hour. Well, sort of.