By default, FRED autosaves one “level of undo” in the Undo directory. So, one action can be undone by selecting Edit > Undo from the menu. That action is stored in a *.fru file or *.frs script in the Undo directory.
The number of autosaved FRED documents may be increased by selecting Tools > Preferences from the menu, then clicking on the Miscellaneous 2 tab, and then using the up or down arrow to change the “number of levels of undo”. The autosaved*.fru files are named “FREDUndoXXXXXXX_Y.fru”, where X represents the timestamp of the autosave and Y indicates the undo level. However, FRED only autosaves one, the most recent, script (MostRecentScript.frs) file.
To recover a *.fru file, locate the Undo directory and change the file’s extension from “fru” to “frd”. You can then open or move this file as you normally would.
To recover the most recent script file, locate the file in the Undo directory and open it as you normally would any script file. You can then save this file as you normally would.
Note: The default Undo directory is “C:\Documents and settings\<username>\Local Settings\Temp\Fred Undo”. You can change this by selecting Tools > Preferences > File Locations from the menu, then scrolling through the file list, and then editing the entry for “Undo directory”.
Another Note: To have FRED automatically search the Undo directory and recover the most recent *.fru document, make sure “Allow about recovery” is selected as a preference. To do this, select Tools > Preferences from the menu, then click on the Miscellaneous tab, and check the “Allow abort recovery” checkbox.