<s>
Terminal	O
(	O
Terminal.app	O
)	O
is	O
the	O
terminal	B-Application
emulator	I-Application
included	O
in	O
the	O
macOS	B-Application
operating	B-General_Concept
system	I-General_Concept
by	O
Apple	O
.	O
</s>
<s>
Terminal	O
originated	O
in	O
NeXTSTEP	B-Application
and	O
OPENSTEP	B-Operating_System
,	O
the	O
predecessor	O
operating	B-General_Concept
systems	I-General_Concept
of	O
macOS	B-Application
.	O
</s>
<s>
As	O
a	O
terminal	B-Application
emulator	I-Application
,	O
the	O
application	O
provides	O
text-based	O
access	O
to	O
the	O
operating	B-General_Concept
system	I-General_Concept
,	O
in	O
contrast	O
to	O
the	O
mostly	O
graphical	O
nature	O
of	O
the	O
user	O
experience	O
of	O
macOS	B-Application
,	O
by	O
providing	O
a	O
command-line	B-Application
interface	I-Application
to	O
the	O
operating	B-General_Concept
system	I-General_Concept
when	O
used	O
in	O
conjunction	O
with	O
a	O
Unix	B-Application
shell	I-Application
,	O
such	O
as	O
zsh	B-Application
(	O
the	O
default	O
shell	O
in	O
macOS	B-Device
Catalina	I-Device
)	O
.	O
</s>
<s>
The	O
user	O
can	O
choose	O
other	O
shells	O
available	O
with	O
macOS	B-Application
,	O
such	O
as	O
the	O
KornShell	B-Language
,	O
tcsh	B-Language
,	O
and	O
bash	B-Operating_System
.	O
</s>
<s>
Available	O
options	O
are	O
ansi	O
,	O
dtterm	O
,	O
nsterm	O
,	O
rxvt	B-Application
,	O
vt52	B-Application
,	O
vt100	B-Device
,	O
vt102	O
,	O
xterm	B-Language
,	O
xterm-16color	O
and	O
xterm-256color	O
,	O
which	O
differ	O
from	O
the	O
OS	O
X	O
10.5	O
(	O
Leopard	O
)	O
choices	O
by	O
dropping	O
the	O
xterm-color	O
and	O
adding	O
xterm-16color	O
and	O
xterm-256color	O
.	O
</s>
<s>
These	O
settings	O
do	O
not	O
alter	O
the	O
operation	O
of	O
Terminal	O
,	O
and	O
the	O
xterm	B-Language
settings	O
do	O
not	O
match	O
the	O
behavior	O
of	O
xterm	B-Language
.	O
</s>
<s>
Terminal	O
includes	O
several	O
features	O
that	O
specifically	O
access	O
macOS	B-Application
APIs	O
and	O
features	O
.	O
</s>
<s>
These	O
include	O
the	O
ability	O
to	O
use	O
the	O
standard	O
macOS	B-Application
Help	O
search	O
function	O
to	O
find	O
manual	O
pages	O
and	O
integration	O
with	O
Spotlight	B-Application
.	O
</s>
<s>
Terminal	O
was	O
used	O
by	O
Apple	O
as	O
a	O
showcase	O
for	O
macOS	B-Application
graphics	O
APIs	O
in	O
early	O
advertising	O
of	O
Mac	B-Application
OS	I-Application
X	O
,	O
offering	O
a	O
range	O
of	O
custom	O
font	O
and	O
coloring	O
options	O
,	O
including	O
transparent	O
backgrounds	O
.	O
</s>
