# The Command Window [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [User Guide](Help%20System/GSTARCAD/2021/User%20Guide/(User%20Guide).md) → [The User Interface](Help%20System/GSTARCAD/2021/User%20Guide/The%20User%20Interface/(The%20User%20Interface).md) The command window is a dockable and resizable window, which can display commands, system variables, options, messages and prompts. - [Enter Commands on the Command Line](Help%20System/GSTARCAD/2021/User%20Guide/The%20User%20Interface/The%20Command%20Window/Enter%20Commands%20on%20the%20Command%20Line.md "GstarCAD Help") To enter a command you can use the keyboard. Some commands also have abbreviated names called *command aliases*. - [Enter System Variables on the Command Line](Help%20System/GSTARCAD/2021/User%20Guide/The%20User%20Interface/The%20Command%20Window/Enter%20System%20Variables%20on%20the%20Command%20Line.md "GstarCAD Help") How certain commands work is controlled by setting system variables. - [Navigate and Edit Within the Command Window](Help%20System/GSTARCAD/2021/User%20Guide/The%20User%20Interface/The%20Command%20Window/Navigate%20and%20Edit%20Within%20the%20Command%20Window.md "User Guide") To correct or repeat commands, you can edit text in the command window. - [Switch Between Dialog Boxes and the Command Line](Help%20System/GSTARCAD/2021/User%20Guide/The%20User%20Interface/The%20Command%20Window/Switch%20Between%20Dialog%20Boxes%20and%20the%20Command%20Line.md "GstarCAD Help") Instead of using a dialog box or switching back again, you can display prompts on the command line. When you use scripts, this option is most useful. --- ## Other versions with matching text [GstarCAD 8 (2013–2014)](../../../2013/User%20Guide/The%20User%20Interface/The%20Command%20Window.md) · [GstarCAD 2015](../../../2015/User%20Guide/The%20User%20Interface/The%20Command%20Window.md) · [GstarCAD 2016](../../../2016/User%20Guide/The%20User%20Interface/The%20Command%20Window.md) · [GstarCAD 2017](../../../2017/User%20Guide/The%20User%20Interface/The%20Command%20Window.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/User%20Guide/The%20User%20Interface/The%20Command%20Window.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/User%20Guide/The%20User%20Interface/The%20Command%20Window.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/User%20Guide/The%20User%20Interface/The%20Command%20Window.md)