The Command Line, positioned at the bottom of the drawing area by default, stands as an important component within Advance Design, facilitating numerous aspects of the design process.

Command line in the Advance Design environment
Provides information about the status of your current action;
Suggests different options to end an operation successfully;
Helps you draw or modify the model's elements;
Displays various warnings and error messages;
Displays parameters of the selected elements (structure elements or analyses);
Provides access to the program commands.
The Command Line's visibility and position, whether floating, docked, (auto)hidden, or resized can be customized within the application environment using the interface display functions.
Follow one of the methods presented below to display the command line:
In the Drawing Area: Right-click the edge and select Command Line.
Through the Ribbon: Go to the Manage tab, select the Components panel, and choose Command Line.
The command line contains three tabs:
Displays a list of performed actions. The bottom command line field can also help you draw/modify objects by directly typing parameters in it:

Information tab
You can easily copy or delete the command line contents using the context menu commands from the Information tab:

Copy/delete content
Displays errors whenever they are detected by the application (e.g.: when launching a verification of the descriptive model). Also, this tab's context menu allows you to quickly copy / delete errors, as well as to select all / highlighted errors:

Errors tab
Intermediates the dialog between the user and the application.
Using the keyboard, it is possible to access the program commands:

Accessing commands using the Command line
As you begin typing the name of a command, a list of available commands containing the typed word(s) is displayed. The corresponding command can be selected by using the up and down arrows of the keyboard and pressing <Enter>. Press again <Enter> to validate the command.

Defining parameters
You can input or modify the model components by typing the desired parameters in the dialog area of the command line.
Access a drawing or a transformation tool from menus or toolbars. Note that the command line switches automatically to the Edit tab and displays a message containing the operation that must be performed next.

Using the Command line for modeling elements
Type the drawing or the modification parameters (separated with a space or a coma) in the dialog area of the command line and press <Enter>.

Using the Command line for modeling elements
The action is performed in the drawing area.
Note: The coordinates entered on the command line follow the order of the current plane coordinates (e.g., X Z for plan view, X Y Z for 3D view). In 3D, to input X Y Z coordinates on the command line, first, hide the workplane.
Right-click in the command line to access commands that allow you to edit its contents:
Copy: copies to clipboard all contents, or only the selected part.
Clear: deletes all contents.
The properties of the selected elements are displayed on the command line.

Displaying properties of a selected element in the Command line