GroIMP's File Explorer shows all those files of the project which have an immediate meaning as files to GroIMP. These are source code files, plain text files, HTML files and the like. Files which are used to define non-file-like objects (e.g., images, 3D geometry, data sets) are not shown in the file explorer panel, they are accessible in the panels of the corresponding object type.

Figure: File Explorer

If the file explorer is not already shown, open the panel via the Panel menu. As you will know it from your system's file browser, GroIMP's file exporer displays files in a tree-like structure. Files may be activated by a double-click or pressing the Enter key: On activation, source code and text files are opened in the text editor, HTML files are shown in GroIMP's integrated browser. At the moment, files cannot be renamed, moved or deleted in the file explorer.

Files which already exist in your file system can be added to a project via the menu item Object/New/Add File. You have the choice to _link_ or _add_ these files: A linked file does not become part of the project, the project just references it in your file systems. Changes to a linked file take effect on the project when GroIMP (re-)opens the file. In contrast to a linked file, an added file is copied into the project, thus, after addition, there is no connection between the original file and the project any more.

In the figure “File Explorer”, a file explorer panel is shown. `FTree.rgg` is a source code file, `FTree.txt` a text file which contains some explanations about the project FTree, and `index.html` is a link (indicated by the small arrow at the lower left corner of the icon) to an HTML file.