File Name
Spiral is compatible with long file and directory names that follow the Windows conventions. Some versions of the Windows operating environment will truncate the default spiral extension to the three letters spi, so we recommend that you explicitly add the spiral extension to the file name in the Save As dialog window.
File Type
Starting with version 4.0 of the Spiral program, the Project Data File is a binary file that can no longer be viewed or manipulated outside the Spiral program. Use the Export command to create a set of ASCII files that contain the major data for the current project. These files can then be manipulated outside the Spiral program with an ASCII text editor and then imported again into the Spiral program using the Import command.