Status meanings :
---------------
! : not used
- : used without arg
+ : used with argument
* : used with optional argument
---------------
letter status description :
---------------
a * alteration of operation             --alter   argument: s[aved]
b - terminal bell                       --bell
c + create archive                      --create
d + difference with filesystem          --diff
e - simulate the operation              --empty		
f - do not restore directory structure  --flat
g !
h - help usage                          --help
i - path of the input pipe              --input
j !
k - do not deleted files drop between two backups --no-delete
l + list archive contents               --list
m + minimum size below which no compression will occur. --mincompr a default value is used. use -m 0 if you want to compress in any case.
n - do not allow overwriting            --no-overwrite
o - path of the output pipe             --output
p - pause before creating new slice     --pause
q !
r - do not overwrite more recent file   --recent
s + size of slice                       --slice
t + test archive structure              --test
u - not consider user EA                --no-user-EA
v - verbose output                      --verbose
w * do not warn before overwriting      --no-warn
x + extract archive                     --extract
y * bzip2 compression                   --bzip2
z * gzip compression                    --gzip
A + make a differential backup          --ref
B + filename taken as command-line extension --config
C + extract catalogue in separated file --isolate
D - store excluded dir as empty dir     --empty-dir
E + shell command to launch with slices --execute
F + shell command to launch with slices of archive of reference   --execute-ref
G !
H * if a file for differential backup or diff differs from exactly one hour it is assumed as identical (no change).
I + include mask                        --include
J + key for unscrambling the reference catalogue --key-ref
K + key for un/scrambling               --key
L - license information
M !
N - do not read any configuration file ~/.darrc or /etc/darrc
O - ignore user Id and group Id         --ignore-owner
P + prune a directory tree              --prune
Q !
R + set the root directory              --root
S + size of the first slice             --first-slice
T - tree listing format                 --tree-format,
U - not consider root(or system) EA     --no-system-EA
V - version information                 --version
W - warranty disclosure information (POSIX RESERVED, sorry)
X + exclude mask                        --exclude
Y + included only filename for compression --include-compression
Z + excluded filename from compression  --exclude-compression
  - don't save files with nodump flag set --nodump




