Chapter 1 Introduction to AutoCAD 23 Copyright Goodheart-Willcox Co., Inc. NOTE NOTE Illustrations in this textbook that display the command line show the command line docked at the bottom of the AutoCAD window, above the status bar. This may be different from the appearance you see on-screen. Where appropriate in this textbook, the command line is shown fl oating to explain features associated with the fl oating command line or to show additional command line history. Depending on the command in progress, different information and options appear at the command line. For example, Figure 1-21A shows the display after starting the CIRCLE command. The prompt line shows an icon and the name of the active command followed by a prompt, which reads Specify center point for circle or. In this case, to draw a circle, pick in the drawing window or enter coordinates to specify the center point of the circle, or select a different option as suggested by the “or” portion of the prompt. The square brackets ([]) contain available options. Select an option using the cursor or type the name of the option. Each option has an alias, or unique highlighted upper- case character(s), that you can enter at the prompt rather than typing the entire option name. You can also select an option by right-clicking in the drawing window and picking an option from the shortcut menu. As you work with a command, the information displayed at the command line changes. The active prompt background is white by default to distinguish it from prompt and command line history, which is gray by default. When the command line is docked, one line of command history appears by default. Figure 1-21B shows the display after specifying the center point of the circle and entering the Diameter option. At this prompt, you must specify the diameter of the circle. Some command prompts include angle brackets ( ) surrounding the default option or value press [Enter] to accept the default instead of typing the value again. To move the command line to a different location in the drawing window, pick and hold the grab bar at the left edge and drag it. When the command line is fl oating, three lines of command history appear by default. See Figure 1-22. Some commands, such as the FILLET command active in Figure 1-22, display current command settings as the fi rst line of prompt history after the command name for reference. Figure 1-21. A—The command line after you first enter the CIRCLE command. Follow the prompt or select an available option shown in square brackets ([]). B—Prompt history appears as you progress through a command sequence. Adjust the height of the docked command line to change the number of lines of command history. Press [Enter] to accept a default value shown in angle brackets ( ). Pick and drag to move the command line Pick to select an option A B Pick to hide the command line Pick to customize the command line Pick to view and select a recently used command Options in brackets Prompt history Active prompt Default value in