One question...

Theme: General use / display / view

Help! TARGET crashed and I could not save my project. Is there a rescue?
In the background, TARGET creates backups and autosaves of your work. The files are called:

*.BK1 ... *.BK9 and *.T3001A ... *.T3001C

They are located next to your project file in the subdirectory "BackupFiles". Do not be alarmed immediately if the directory seems to be empty. When opening a file, TARGET looks only for the extension T3001. Set the bottom right of the file open dialog to show the other file types as well.

Please read more details here: Backup