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manual abstract
CHANGE
A
TTRIBUTES
Changes
the
subitem
coun
t,
t
yp e,
and/or
length
of
a
data
item.
(F
or
information
ab out
supp orted
item
t
yp e
con
v
ersions,
refer
to
T
able
3-1
later
in
this
section.)
Syntax
CHA[NGE]
A[TTRIBUTES]
DataItemName
[ SubitemCount ]
SubitemT
yp
e
SubitemL
ength
P
arameters
DataItemName
is
the
name
of
the
data
item
whose
attributes
are
c
hanged.
Eac
h
data
item
within
the
database
m
ust
ha
v
e
a
unique
name.
This
name
m
ust
b e
from
1
to
16
c
haracters,
the
rst
of
whic
h
m
ust
b e
alphab etic.
Characters
after
the
rst
m
ust
b e
c
hosen
from
this
set:
letters
A
-
Z,
digits
0
-
9,
and
+
*
/
?
'
#
%
&
@
only
.
SubitemCount
m
ust
b e
an
in
teger
from
1
to
255.
F
or
data
item
t
yp e
P
,
the
pro duct
of
the
subitem
coun
t
and
the
subitem
length
m
ust
b e
ev
enly
divisible
b
y
4.
F
or
data
item
t
yp es
U,
X,
and
Z,
the
pro duct
of
the
subitem
coun
t
and
the
subitem
length
m
ust
equal
an
ev
en
n
um
b er.
If
this
parameter
is
omitted,
the
subitem
coun
t
is
assumed
to
b e
1.
SubitemT
yp
e
m
ust
b e
a
v
alid
data
item
t
yp e:
[!]E,
I,
J,
P
,
R,
U,
X,
or
Z.
Data
t
yp e
E
is
sp ecied
in
t
w
o
w
a
ys
as
follo
ws:
E
Sp ecies
IEEE
format
for
real
n
um
b ers.
!E
Sp ecies
IEEE
format
when
the
stored
data
is
already
in
IEEE
data
format.
The
optional
exclamation
p oint
(!)
indicates
that
the
data
t
yp e
is
c
hanged
to
t
yp e
E;
ho
w
ev
er,
the
data
is
not
con
v
erted
b ecause
it
is
already
in
the
correct
format.
T
o
use
!E,
the
curren
t
subitem
length
must
b e
equiv
alen
t
to
2
or
4
halfwords.
SubitemL
ength
m
ust
b e
an
in
teger
from
1
to
255
for
data
item
t
yp es
P
,
U,
X,
and
Z.
The
length
for
t
yp es
I
and
J
m
ust
b e
1,
2,
or
4.
F
or
t
yp e
K,
it
m
ust
b e
1
or
2;
and
for
t
yp es
E
and
R,
it
m
ust
b e
2
or
4.
F
or
data
item
t
yp e
P
,
the
pro duct
of
the
subitem
coun
t
and
the
subitem
length
m
ust
b e
ev
enly
divisible
b
y
4.
F
or
data
item
t
yp es
U,
X,
and
Z,
the
subitem
coun
t
and
the
subitem
length
m
ust
b e
an
ev
en
n
um
b er.
When
sp ecifying
t
yp e
E
with
the
no-con
v
ersion
option
(!E),
if
the
subitem
Note
length
is
c
hanged
from
2
to
4,
or
4
to
2,
the
data
has
to
b e
con
v
erted
to
t
in
to
the
new
eld
size
with
the
assumption
it
is
already
in
IEEE
format.
Description
Use
this
command
to
c
hange
the
subitem
coun
t,
t
yp e,
and/or
length
of
a
data
item.
This
command
is
similar
to
CHANGE
ITEM;
ho
w
ev
er,
use
the
CHANGE
A
TTRIBUTE
command
when
y
ou
only
w
an
t
to
c
hange
data
item
attributes
but
do
not
w
an
t
to
c
hange
the
securit
y
or
order
in
whic
h
the
data
item
app ears
in
the
ITEMS
part
of
the
sc
hema.
3-6
Revised
Command
Descriptions
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Software - MPE/iX 6.5 Operating System (137.87 kb)