Script Debugger can open any of AppleScript’s native file types from any period in AppleScript’s history. This includes:

• Compiled script file with the bytecode in the resource fork. This is the oldest format, going back as far as AppleScript itself.
• Compiled script file with the bytecode in the data fork. This is the default format created by the current version of Apple’s Script Editor.
• Script bundle. This is a bundle with the bytecode as a data fork compiled script file inside the bundle. It is compatible with Panther (Mac OS X 10.3) and later.
• Applet. Script Debugger can open applets created on any system.
• Applet bundle. This is a bundle applet format compatible with Panther (Mac OS X 10.3) and later.

When Script Debugger opens a script, it retains the current values of the script’s top-level entities (such as properties).

Script Debugger can also open a text file. If the file starts with a UTF-8 or UTF-16 Unicode BOM (byte order mark), it will be interpreted accordingly; otherwise, the file is assumed to be in the MacRoman encoding. Line endings can be Mac or Unix.

Script Debugger can also save in a full range of formats.