<s>
In	O
several	O
fields	O
,	O
especially	O
computing	O
,	O
deprecation	B-General_Concept
is	O
the	O
discouragement	O
of	O
use	O
of	O
some	O
terminology	O
,	O
feature	O
,	O
design	O
,	O
or	O
practice	O
,	O
typically	O
because	O
it	O
has	O
been	O
superseded	O
or	O
is	O
no	O
longer	O
considered	O
efficient	O
or	O
safe	O
,	O
without	O
completely	O
removing	O
it	O
or	O
prohibiting	O
its	O
use	O
.	O
</s>
<s>
Typically	O
,	O
deprecated	B-General_Concept
materials	O
are	O
not	O
completely	O
removed	O
to	O
ensure	O
legacy	O
compatibility	O
or	O
back	O
up	O
practice	O
in	O
case	O
new	O
methods	O
are	O
not	O
functional	O
in	O
an	O
odd	O
scenario	O
.	O
</s>
<s>
In	O
general	O
English	O
usage	O
,	O
the	O
infinitive	O
"	O
to	O
deprecate	B-General_Concept
"	O
means	O
"	O
to	O
express	O
disapproval	O
of	O
(	O
something	O
)	O
"	O
.	O
</s>
<s>
An	O
early	O
documented	O
usage	O
of	O
"	O
deprecate	B-General_Concept
"	O
in	O
this	O
sense	O
is	O
in	O
Usenet	B-Application
posts	O
in	O
1984	O
,	O
referring	O
to	O
obsolete	O
features	O
in	O
4.2BSD	O
and	O
the	O
C	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
An	O
expanded	O
definition	O
of	O
"	O
deprecate	B-General_Concept
"	O
was	O
cited	O
in	O
the	O
Jargon	O
File	O
in	O
its	O
1991	O
revision	O
,	O
and	O
similar	O
definitions	O
are	O
found	O
in	O
commercial	O
software	O
documentation	O
from	O
2014	O
and	O
2023	O
.	O
</s>
<s>
While	O
a	O
deprecated	B-General_Concept
software	O
feature	O
remains	O
in	O
the	O
software	O
,	O
its	O
use	O
may	O
raise	O
warning	O
messages	O
recommending	O
alternative	O
practices	O
.	O
</s>
<s>
Deprecated	B-General_Concept
status	O
may	O
also	O
indicate	O
the	O
feature	O
will	O
be	O
removed	O
in	O
the	O
future	O
.	O
</s>
<s>
Features	O
are	O
deprecated	B-General_Concept
,	O
rather	O
than	O
immediately	O
removed	O
,	O
to	O
provide	O
backward	O
compatibility	O
and	O
to	O
give	O
programmers	O
time	O
to	O
bring	O
affected	O
code	O
into	O
compliance	O
with	O
the	O
new	O
standard	O
.	O
</s>
<s>
Among	O
the	O
most	O
common	O
reasons	O
for	O
deprecation	B-General_Concept
are	O
:	O
</s>
<s>
For	O
instance	O
,	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
contains	O
two	O
modules	O
to	O
communicate	O
with	O
Windows	B-Application
networks	O
:	O
smbfs	O
and	O
cifs	O
.	O
</s>
<s>
The	O
latter	O
provides	O
better	O
security	O
,	O
supports	O
more	O
protocol	O
features	O
,	O
and	O
integrates	O
better	O
with	O
the	O
rest	O
of	O
the	O
kernel	B-Operating_System
.	O
</s>
<s>
Since	O
the	O
inclusion	O
of	O
cifs	O
,	O
smbfs	O
has	O
been	O
deprecated	B-General_Concept
.	O
</s>
<s>
The	O
simple	O
C	B-Language
standard	O
function	O
gets( )	O
is	O
an	O
example	O
,	O
because	O
using	O
this	O
function	O
can	O
introduce	O
a	O
buffer	B-General_Concept
overflow	I-General_Concept
into	O
the	O
program	O
that	O
uses	O
it	O
.	O
</s>
<s>
The	O
Java	B-Language
API	I-Language
methods	O
Thread.stop	O
,	O
.suspend	O
and	O
.resume	O
are	O
further	O
examples	O
.	O
</s>
<s>
Early	O
versions	O
of	O
the	O
Web	O
markup	O
language	O
HTML	B-Language
included	O
a	O
FONT	O
element	O
to	O
allow	O
page	O
designers	O
to	O
specify	O
the	O
font	O
in	O
which	O
text	O
should	O
be	O
displayed	O
.	O
</s>
<s>
With	O
the	O
release	O
of	O
Cascading	B-Language
Style	I-Language
Sheets	I-Language
and	O
HTML	B-Language
4.0	I-Language
,	O
the	O
FONT	O
element	O
became	O
extraneous	O
,	O
and	O
detracted	O
from	O
the	O
benefits	O
of	O
noting	O
structural	O
markup	O
in	O
HTML	B-Language
and	O
graphical	O
formatting	O
in	O
CSS	B-Language
.	O
</s>
<s>
Thus	O
,	O
the	O
FONT	O
element	O
was	O
deprecated	B-General_Concept
in	O
the	O
Transitional	O
HTML	B-Language
4.0	I-Language
standard	O
,	O
and	O
eliminated	O
in	O
the	O
Strict	O
variant	O
.	O
</s>
<s>
For	O
instance	O
,	O
when	O
Apple	O
Inc	O
.	O
planned	O
the	O
transition	O
from	O
Mac	B-Operating_System
OS	I-Operating_System
9	I-Operating_System
to	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
it	O
created	O
a	O
subset	O
of	O
the	O
older	O
system	O
's	O
API	B-Application
which	O
would	O
support	O
most	O
programs	O
with	O
minor	O
changes	O
:	O
the	O
Carbon	B-Operating_System
library	O
(	O
that	O
has	O
since	O
been	O
deprecated	B-General_Concept
)	O
,	O
available	O
in	O
both	O
Mac	B-Operating_System
OS	I-Operating_System
9	I-Operating_System
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
Programmers	O
who	O
were	O
,	O
at	O
the	O
time	O
,	O
chiefly	O
using	O
Mac	B-Operating_System
OS	I-Operating_System
9	I-Operating_System
,	O
could	O
ensure	O
that	O
their	O
programs	O
would	O
run	O
natively	O
on	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
by	O
using	O
only	O
the	O
API	B-Application
functions	I-Application
supported	O
in	O
Carbon	B-Operating_System
.	O
</s>
<s>
Other	O
Mac	B-Operating_System
OS	I-Operating_System
9	I-Operating_System
functions	O
were	O
deprecated	B-General_Concept
,	O
and	O
were	O
never	O
supported	O
natively	O
in	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
The	O
original	O
name	O
will	O
likely	O
remain	O
indefinitely	O
,	O
but	O
will	O
be	O
deprecated	B-General_Concept
to	O
encourage	O
use	O
of	O
the	O
newer	O
,	O
more	O
consistent	O
naming	O
convention	O
.	O
</s>
<s>
An	O
example	O
would	O
be	O
an	O
API	B-Application
that	O
alternately	O
used	O
the	O
spelling	O
"	O
color	O
"	O
and	O
"	O
colour	O
"	O
.	O
</s>
<s>
Standardization	O
would	O
result	O
in	O
the	O
use	O
of	O
only	O
one	O
of	O
the	O
regional	O
spellings	O
throughout	O
,	O
and	O
all	O
occurrences	O
of	O
the	O
other	O
spelling	O
would	O
be	O
deprecated	B-General_Concept
.	O
</s>
<s>
An	O
example	O
is	O
VLC	B-Application
Media	I-Application
Player	I-Application
;	O
VLC	O
used	O
to	O
stand	O
for	O
"	O
VideoLan	B-Application
Client	I-Application
"	O
,	O
and	O
a	O
separate	O
"	O
VideoLan	O
Server	O
"	O
was	O
available	O
as	O
its	O
co-feature	O
.	O
</s>
<s>
Over	O
time	O
,	O
these	O
older	O
devices	O
were	O
widely	O
deprecated	B-General_Concept
in	O
favor	O
of	O
safer	O
grounded	O
(	O
"	O
3-prong	O
"	O
)	O
receptacles	O
.	O
</s>
<s>
In	O
writing	O
and	O
editing	O
,	O
usage	O
of	O
a	O
word	O
may	O
be	O
deprecated	B-General_Concept
because	O
it	O
is	O
ambiguous	O
,	O
confusing	O
,	O
or	O
offensive	O
to	O
some	O
readers	O
.	O
</s>
<s>
Some	O
word	O
usages	O
that	O
have	O
acquired	O
different	O
connotations	O
over	O
time	O
,	O
such	O
as	O
gay	O
or	O
colored	O
,	O
may	O
be	O
deprecated	B-General_Concept
as	O
obsolete	O
in	O
formal	O
writing	O
.	O
</s>
<s>
As	O
an	O
example	O
,	O
in	O
the	O
Ethernet	O
standard	O
IEEE	O
802.3-2012	O
,	O
Clause	O
5	O
(	O
Layer	O
Management	O
)	O
is	O
"	O
deprecated	B-General_Concept
"	O
by	O
Clause	O
30	O
(	O
Management	O
)	O
,	O
except	O
for	O
5.2.4	O
.	O
</s>
<s>
Deprecation	B-General_Concept
may	O
also	O
occur	O
when	O
a	O
technical	O
term	O
becomes	O
obsolete	O
,	O
either	O
through	O
change	O
or	O
supersession	O
.	O
</s>
<s>
An	O
example	O
from	O
paleontology	O
is	O
the	O
previously	O
deprecated	B-General_Concept
term	O
Brontosaurus	O
;	O
before	O
being	O
re-recognized	O
as	O
a	O
unique	O
genus	O
,	O
it	O
was	O
considered	O
a	O
popular	O
,	O
yet	O
deprecated	B-General_Concept
,	O
name	O
for	O
the	O
genus	O
Apatosaurus	O
.	O
</s>
<s>
Some	O
examples	O
of	O
deprecated	B-General_Concept
terms	O
from	O
medicine	O
include	O
consumption	O
(	O
tuberculosis	O
)	O
,	O
grippe	O
(	O
influenza	O
)	O
,	O
and	O
apoplexy	O
(	O
stroke	O
)	O
.	O
</s>
<s>
In	O
chemical	O
nomenclature	O
,	O
the	O
international	O
standards	O
organization	O
IUPAC	O
(	O
International	O
Union	O
of	O
Pure	O
and	O
Applied	O
Chemistry	O
)	O
has	O
deprecated	B-General_Concept
the	O
term	O
"	O
methyl	O
ethyl	O
ketone	O
"	O
,	O
and	O
now	O
recommends	O
using	O
the	O
term	O
"	O
ethyl	O
methyl	O
ketone	O
"	O
instead	O
.	O
</s>
