Drag any supported geometry file format from Windows Explorer, Rhino will:
Open the file.
Import the file into the current model.
Insert the file as a block, group, or geometry.
Attach the file to the current worksession.
Note: You can also start Rhino by dragging a text file with the .txt extension over a Rhino shortcut. This starts Rhino and runs the text file using the ReadCommandFile command.
Drag any supported image file type that makes textures (bmp, png, jpeg, hdr, exr).
Drag and drop on an object
The material on the object is either changed to set the diffuse texture to the dragged texture, or a new material is created with that texture in the diffuse slot.
Drag and drop to a free space
A dialog box offers options.
Runs the PictureFrame command with the bitmap as the option.
Runs -ViewportProperties _wallpaper _Set with the bitmap as the option.
Either sets the current environment's texture to the dropped texture or creates a new basic environment with that texture and sets it current.