# OPEN Command [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [Commands](Help%20System/GSTARCAD/2022/Commands/(Commands).md) → [O](Help%20System/GSTARCAD/2022/Commands/O/(O).md) ## Function Description: This command is used to open an existing drawing. The Select Files dialog box is displayed. Users can open or load a portion of a drawing, including specified geometrics in viewports or layers. In the Select Files dialog box, click the arrow next to the Open button and select Open Read-Only. If the FILEDIA system variable is set to 0, the OPEN command displays a command prompt without dialog box. Note: If the opened drawing contains macros, the Macros AntiVirus dialog box is displayed. ## Command Access: > **Icon:** >  > **Menu:** File \> Open > **Ribbon:** / > **Toolbar:** Standard \> Open > **Command:** OPEN > **Alias:** / > **Shortcut:** CTRL\+O **Command Prompts: /**