Use the Save As command to rename and save a Terrain file (*.TER), or to export the file into other supported file formats. Save As preserves the last saved version of the file, and saves a copy under the name you give it.
Save as Type (Combo Box):
This combo box shows a list of supported file types. You can add and remove items from this list using the Export Setup Dialog in the Module - Setup Menu.
You can also add a new format from within the File | Save As dialog box:
1. Select "Add a new file format...(*.*)" in the Save as Type Combobox.
2. Select a file in the "File Name" list, and press the Save button.
4. Press the New Format button to pop-up the Import Setup dialog. This will show a complete list of file formats available, and allow you to add and remove file formats.