Option --last -> the last backup is automatically selected and restored to the target medium
    Option --select -> the desired backup can be selected from a list
    Option --backup -> some options are asked like more than two default partitions, comment in backup name....    
- See [this flowchart](./images/raspiBackopRestoreHelper_simple_flow-chart.pdf) for details

Because of the -M function, with which a comment can be appended to the name of the backup directory (but these backups are not included in the backup strategy), I added     an option --delete, with which a version can be selected from a list and deleted.
Before the final confirmation of the deletion process, the name of the directory to be deleted is displayed for checking purposes.
After the deletion process, the contents of the backup directory are displayed again via ls-la for checking purposes.

!! This dialogue can only be called up (as protection against accidental wrong entries) by using the --delete option.

I have also made a few optical changes and removed the completely superfluous dash lines.