This is the "restore" tree of Relax-and-Recover
-----------------------------------------------
000-099 initialisation, e.g. copy dev-files needed for external backups progs
100-199 do mounting if necessary (NETFS)
200-299	user interaction scripts, e.g. do restore via 3th party software
300-399	exec pre-exec scripts
400-499	exec the restore itself
500-599	exec the post-exec scripts
600-699	reserved
700-799	umount (NETFS)
800-899	reserved
900-999	finalisation scripts
