.scm Files

Scheme files are typically plain-text files saved with a .scm extension. By default, DrScheme will save files with this extension.

DrScheme has extended the .scm file format to include some special features. These can be accessed from the "Special" menu in DrScheme. However, we do not recommend that you use these features; there have been data corruption issues in the past.

To ensure that your file is saved as a plain-text .scm file , use
"File" -> "Save Other" -> "Save Definitions As Text…"