# OPEN3RD Command
[GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [O](Help%20System/GSTARCAD/2027/Commands/O/(O).md)
## Function Description:
This command is used to open third-party drawing files in various formats, such as \*. 3ds, \*. dae, \*. fbx, \*. obj, \*. ply, \*. stl, etc..
## Command Access:
> **Icon:** /
> **Menu:** /
> **Ribbon:** /
> **Toolbar:** /
> **Command:** OPEN3RD
> **Alias:** /
> **Shortcut:** /
**Command Prompts:** If FILEDIA is 0, the command line will prompt:
```
Enter name of drawing file to open<.>:
```
If the system variable FILEDIA is 1, the Select Files dialog box is displayed, in which you can select a third-party drawing file to open.
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[Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences_O/OPEN3RD.html) · © Gstarsoft Co., Ltd.