<s>
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
(	O
also	O
informally	O
known	O
as	O
OOXML	B-Operating_System
)	O
is	O
a	O
zipped	B-General_Concept
,	O
XML-based	O
file	O
format	O
developed	O
by	O
Microsoft	O
for	O
representing	O
spreadsheets	B-Application
,	O
charts	O
,	O
presentations	O
and	O
word	B-General_Concept
processing	I-General_Concept
documents	O
.	O
</s>
<s>
Ecma	O
International	O
standardized	O
the	O
initial	O
version	O
as	O
ECMA-376	B-Operating_System
.	O
</s>
<s>
ISO	O
and	O
IEC	O
standardized	O
later	O
versions	O
as	O
ISO/IEC	B-Operating_System
29500	I-Operating_System
.	O
</s>
<s>
Microsoft	B-Operating_System
Office	I-Operating_System
2010	I-Operating_System
provides	O
read	O
support	O
for	O
ECMA-376	B-Operating_System
,	O
full	O
support	O
for	O
ISO/IEC	B-Operating_System
29500	I-Operating_System
Transitional	O
,	O
and	O
read	O
support	O
for	O
ISO/IEC	B-Operating_System
29500	I-Operating_System
Strict	O
.	O
</s>
<s>
Microsoft	B-Operating_System
Office	I-Operating_System
2013	I-Operating_System
and	O
later	O
fully	O
support	O
ISO/IEC	B-Operating_System
29500	I-Operating_System
Strict	O
,	O
but	O
do	O
not	O
use	O
it	O
as	O
the	O
default	O
file	O
format	O
because	O
of	O
backwards	O
compatibility	O
concerns	O
.	O
</s>
<s>
In	O
2000	O
,	O
Microsoft	O
released	O
an	O
initial	O
version	O
of	O
an	O
XML-based	O
format	O
for	O
Microsoft	B-Application
Excel	I-Application
,	O
which	O
was	O
incorporated	O
in	O
Office	O
XP	O
.	O
</s>
<s>
The	O
Excel	B-Application
and	O
Word	O
formats	O
—	O
known	O
as	O
the	O
Microsoft	B-Operating_System
Office	I-Operating_System
XML	I-Operating_System
formats	I-Operating_System
—	O
were	O
later	O
incorporated	O
into	O
the	O
2003	O
release	O
of	O
Microsoft	B-Application
Office	I-Application
.	O
</s>
<s>
Microsoft	O
announced	O
in	O
November	O
2005	O
that	O
it	O
would	O
co-sponsor	O
standardization	O
of	O
the	O
new	O
version	O
of	O
their	O
XML-based	O
formats	O
through	O
Ecma	O
International	O
as	O
"	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
"	O
.	O
</s>
<s>
Microsoft	O
submitted	O
initial	O
material	O
to	O
Ecma	O
International	O
Technical	O
Committee	O
TC45	O
,	O
where	O
it	O
was	O
standardized	O
to	O
become	O
ECMA-376	B-Operating_System
,	O
approved	O
in	O
December	O
2006	O
.	O
</s>
<s>
The	O
resulting	O
four-part	O
International	O
Standard	O
(	O
designated	O
ISO/IEC	B-Operating_System
29500:2008	I-Operating_System
)	O
was	O
published	O
in	O
November	O
2008	O
and	O
can	O
be	O
downloaded	O
from	O
the	O
ITTF	O
.	O
</s>
<s>
A	O
technically	O
equivalent	O
set	O
of	O
texts	O
is	O
published	O
by	O
Ecma	O
as	O
ECMA-376	B-Operating_System
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
File	O
Formats	O
—	O
2nd	O
edition	O
(	O
December	O
2008	O
)	O
;	O
they	O
can	O
be	O
downloaded	O
from	O
their	O
web	O
site	O
.	O
</s>
<s>
The	O
ISO/IEC	O
standardization	B-Architecture
of	I-Architecture
Office	I-Architecture
Open	I-Architecture
XML	I-Architecture
was	O
controversial	O
and	O
embittered	O
,	O
with	O
much	O
discussion	O
both	O
about	O
the	O
specification	O
and	O
about	O
the	O
standardization	O
process	O
.	O
</s>
<s>
According	O
to	O
InfoWorld	O
,	O
"	O
OOXML	B-Operating_System
was	O
opposed	O
by	O
many	O
on	O
grounds	O
it	O
was	O
unneeded	O
,	O
as	O
software	O
makers	O
could	O
use	O
OpenDocument	B-Application
Format	I-Application
(	O
ODF	B-Application
)	O
,	O
a	O
less	O
complicated	O
office	O
software	O
format	O
that	O
was	O
already	O
an	O
international	O
standard.	O
"	O
</s>
<s>
The	O
same	O
InfoWorld	O
article	O
reported	O
that	O
IBM	O
(	O
which	O
supports	O
the	O
ODF	B-Application
format	O
)	O
threatened	O
to	O
leave	O
standards	O
bodies	O
that	O
it	O
said	O
allow	O
dominant	O
corporations	O
like	O
Microsoft	O
to	O
wield	O
undue	O
influence	O
.	O
</s>
<s>
The	O
article	O
further	O
says	O
that	O
Microsoft	O
was	O
accused	O
of	O
co-opting	O
the	O
standardization	O
process	O
by	O
leaning	O
on	O
countries	O
to	O
ensure	O
that	O
it	O
got	O
enough	O
votes	O
at	O
the	O
ISO/IEC	O
for	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
to	O
pass	O
,	O
although	O
it	O
does	O
not	O
specify	O
exactly	O
who	O
accused	O
Microsoft	O
.	O
</s>
<s>
The	O
covenant	O
received	O
a	O
mixed	O
reception	O
,	O
with	O
some	O
like	O
the	O
Groklaw	B-Application
blog	O
criticizing	O
it	O
,	O
and	O
others	O
such	O
as	O
Lawrence	O
Rosen	O
,	O
(	O
an	O
attorney	O
and	O
lecturer	O
at	O
Stanford	O
Law	O
School	O
)	O
,	O
endorsing	O
it	O
.	O
</s>
<s>
This	O
is	O
limited	O
to	O
applications	O
which	O
do	O
not	O
deviate	O
from	O
the	O
ISO/IEC	B-Operating_System
29500:2008	I-Operating_System
or	O
Ecma-376	B-Operating_System
standard	O
and	O
to	O
parties	O
that	O
do	O
not	O
"	O
file	O
,	O
maintain	O
or	O
voluntarily	O
participate	O
in	O
a	O
patent	O
infringement	O
lawsuit	O
against	O
a	O
Microsoft	O
implementation	O
of	O
such	O
Covered	O
Specification	O
"	O
.	O
</s>
<s>
The	O
Open	O
Specification	O
Promise	O
was	O
included	O
in	O
documents	O
submitted	O
to	O
ISO/IEC	O
in	O
support	O
of	O
the	O
ECMA-376	B-Operating_System
fast-track	O
submission	O
.	O
</s>
<s>
The	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
specification	O
exists	O
in	O
several	O
versions	O
.	O
</s>
<s>
Describes	O
extension	O
facilities	O
of	O
OpenXML	B-Operating_System
documents	O
and	O
specifies	O
elements	O
&	O
attributes	O
through	O
which	O
applications	O
can	O
operate	O
across	O
different	O
extensions	O
.	O
</s>
<s>
Later	O
versions	O
of	O
the	O
ECMA-376	B-Operating_System
standard	O
are	O
aligned	O
and	O
technically	O
equivalent	O
to	O
the	O
corresponding	O
ISO	O
standard	O
.	O
</s>
<s>
The	O
ISO/IEC	O
standard	O
is	O
structured	O
into	O
four	O
parts	O
:	O
Parts	O
1	O
,	O
2	O
and	O
3	O
are	O
independent	O
standards	O
;	O
for	O
example	O
,	O
Part	O
2	O
,	O
specifying	O
Open	O
Packaging	O
Conventions	O
,	O
is	O
used	O
by	O
other	O
file	O
formats	O
including	O
XPS	B-Device
and	O
Design	B-Application
Web	I-Application
Format	I-Application
.	O
</s>
<s>
A	O
technically	O
equivalent	O
set	O
of	O
texts	O
is	O
also	O
published	O
by	O
Ecma	O
as	O
ECMA-376	B-Operating_System
2nd	O
edition	O
(	O
2008	O
)	O
.	O
</s>
<s>
The	O
standard	O
specifies	O
two	O
levels	O
of	O
document	O
&	O
application	O
conformance	O
,	O
strict	O
and	O
transitional	O
,	O
for	O
each	O
of	O
WordprocessingML	B-Operating_System
,	O
PresentationML	B-Operating_System
and	O
SpreadsheetML	B-Operating_System
,	O
and	O
also	O
specifies	O
applications	O
 '	O
descriptions	O
of	O
base	O
and	O
full	O
.	O
</s>
<s>
The	O
intent	O
of	O
the	O
changes	O
from	O
ECMA-376	B-Operating_System
1st	O
Edition	O
to	O
ISO/IEC	B-Operating_System
29500:2008	I-Operating_System
was	O
that	O
a	O
valid	O
ECMA-376	B-Operating_System
document	O
would	O
also	O
be	O
a	O
valid	O
ISO	B-Operating_System
29500	I-Operating_System
Transitional	O
document	O
;	O
however	O
,	O
at	O
least	O
one	O
change	O
introduced	O
at	O
the	O
BRM	O
—	O
refusing	O
to	O
allow	O
further	O
values	O
for	O
xsd:boolean	O
—	O
had	O
the	O
effect	O
of	O
breaking	O
backwards-compatibility	O
for	O
most	O
documents	O
.	O
</s>
<s>
A	O
fix	O
for	O
this	O
had	O
been	O
suggested	O
to	O
ISO/IEC	O
JTC	O
1/SC	O
34/WG	O
4	O
,	O
and	O
was	O
approved	O
in	O
June	O
2009	O
as	O
a	O
recommendation	O
for	O
the	O
first	O
revision	O
to	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
.	O
</s>
<s>
Applications	O
capable	O
of	O
reading	O
documents	O
compliant	O
to	O
ECMA-376	B-Operating_System
Edition	O
1	O
would	O
regard	O
ISO/IEC	O
29500-4	O
Transitional	O
documents	O
containing	O
ISO	O
8601	O
dates	O
as	O
corrupt	O
.	O
</s>
<s>
Some	O
older	O
versions	O
of	O
Microsoft	O
Word	O
and	O
Microsoft	B-Application
Office	I-Application
are	O
able	O
to	O
read	O
and	O
write	O
.docx	O
files	O
after	O
installation	O
of	O
the	O
free	O
compatibility	O
pack	O
provided	O
by	O
Microsoft	O
,	O
although	O
some	O
items	O
,	O
such	O
as	O
equations	O
,	O
are	O
converted	O
into	O
images	O
that	O
cannot	O
be	O
edited	O
.	O
</s>
<s>
Starting	O
with	O
Microsoft	B-Application
Office	I-Application
2007	I-Application
,	O
the	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
file	O
formats	O
have	O
become	O
the	O
default	O
file	O
format	O
of	O
Microsoft	B-Application
Office	I-Application
.	O
</s>
<s>
However	O
,	O
due	O
to	O
the	O
changes	O
introduced	O
in	O
the	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
standard	O
,	O
Office	B-Application
2007	I-Application
is	O
not	O
wholly	O
in	O
compliance	O
with	O
ISO/IEC	B-Operating_System
29500:2008	I-Operating_System
.	O
</s>
<s>
Office	B-Operating_System
2010	I-Operating_System
includes	O
support	O
for	O
opening	O
documents	O
of	O
the	O
ISO/IEC	O
29500:2008-compliant	O
version	O
of	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
,	O
but	O
it	O
can	O
only	O
save	O
documents	O
conforming	O
to	O
the	O
transitional	O
,	O
not	O
the	O
strict	O
,	O
schemas	O
of	O
the	O
specification	O
.	O
</s>
<s>
Note	O
that	O
the	O
intent	O
of	O
the	O
ISO/IEC	O
is	O
to	O
allow	O
the	O
removal	O
of	O
the	O
transitional	O
variant	O
from	O
the	O
ISO/IEC	B-Operating_System
29500	I-Operating_System
standard	O
.	O
</s>
<s>
The	O
ability	O
to	O
read	O
and	O
write	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
format	O
is	O
,	O
however	O
,	O
not	O
limited	O
to	O
Microsoft	B-Application
Office	I-Application
;	O
other	O
office	O
products	O
are	O
also	O
able	O
to	O
read	O
&	O
write	O
this	O
format	O
:	O
</s>
<s>
Collabora	B-General_Concept
Online	I-General_Concept
for	O
Online	O
,	O
Mobile	O
and	O
Desktop	O
apps	O
are	O
able	O
to	O
open	O
and	O
save	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
files	O
.	O
</s>
<s>
SoftMaker	B-Application
Office	I-Application
2010	I-Application
is	O
able	O
to	O
read	O
and	O
write	O
DOCX	B-Operating_System
and	O
XLSX	B-Operating_System
files	O
in	O
its	O
word	O
processor	O
&	O
spreadsheet	B-Application
applications	O
.	O
</s>
<s>
LibreOffice	B-Application
is	O
able	O
to	O
open	O
and	O
save	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
files	O
.	O
</s>
<s>
Apache	B-Application
OpenOffice	I-Application
from	O
version	O
3.0	O
can	O
import	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
files	O
but	O
not	O
save	O
them	O
.	O
</s>
<s>
Version	O
3.2	O
improved	O
this	O
feature	O
with	O
read	O
support	O
even	O
for	O
password-protected	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
files	O
.	O
</s>
<s>
The	O
Go-oo	B-Language
fork	O
of	O
OpenOffice	B-Application
could	O
also	O
write	O
OOXML	B-Operating_System
files	O
.	O
</s>
<s>
KOffice	B-Language
from	O
version	O
2.2	O
and	O
later	O
was	O
able	O
to	O
import	O
OOXML	B-Operating_System
files	O
.	O
</s>
<s>
Calligra	B-Application
Suite	I-Application
is	O
able	O
to	O
import	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
files	O
.	O
</s>
<s>
NeoOffice	B-Application
,	O
an	O
OpenOffice.org	O
fork	O
for	O
OS	O
X	O
can	O
import	O
,	O
support	O
to	O
save	O
OOXML	B-Operating_System
started	O
in	O
2017	O
.	O
</s>
<s>
Other	O
office	O
products	O
that	O
offer	O
import	O
support	O
for	O
the	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
formats	O
include	O
:	O
</s>
