-R, --remove-other Delete image files for other Lisp systems.\n\
-U, --remove-unknown Delete unrecognized files in image dir.\n\
-a, --all-configured Select all configured implementations.\n\
-R, --remove-other Delete image files for other Lisp systems.\n\
-U, --remove-unknown Delete unrecognized files in image dir.\n\
-a, --all-configured Select all configured implementations.\n\