Inside Macintosh: AppleScript Language Guide / Part 3 - Appendixes

Appendix B - Scriptable Text Editor Dictionary / Scriptable Text Editor Commands

Open

The standard Open command is defined on page 107. The Scriptable Editor can open its own files and text files (files of type "TEXT"). If you use the Open command to open a file of type "TEXT", the Scriptable Text Editor automatically converts the file to a Scriptable Text Editor file and appends ".s" to the end of the filename.