<s>
Newt	B-Language
is	O
a	O
programming	B-Library
library	I-Library
for	O
color	O
text	B-Application
mode	I-Application
,	O
widget-based	O
user	B-Application
interfaces	I-Application
.	O
</s>
<s>
Newt	B-Language
can	O
be	O
used	O
to	O
add	O
stacked	O
windows	O
,	O
entry	O
widgets	O
,	O
checkboxes	O
,	O
radio	O
buttons	O
,	O
labels	O
,	O
plain	O
text	O
fields	O
,	O
scrollbars	O
,	O
etc.	O
,	O
to	O
text	B-Application
user	I-Application
interfaces	I-Application
.	O
</s>
<s>
This	O
package	O
also	O
contains	O
the	O
shared	O
library	O
needed	O
by	O
programs	O
built	O
with	O
newt	B-Language
,	O
as	O
well	O
as	O
an	O
application	O
whiptail	O
,	O
which	O
provides	O
the	O
most	O
commonly	O
used	O
features	O
of	O
dialog	B-Device
.	O
</s>
<s>
Newt	B-Language
is	O
based	O
on	O
the	O
slang	B-Device
library	I-Device
.	O
</s>
<s>
It	O
abbreviates	O
from	O
Not	O
Erik	O
's	O
Windowing	B-Library
Toolkit	I-Library
.	O
</s>
<s>
Newt	B-Language
was	O
originally	O
designed	O
for	O
use	O
in	O
the	O
install	O
code	O
of	O
Red	O
Hat	O
Linux	B-Application
and	O
is	O
written	O
mostly	O
focusing	O
on	O
clear	O
interface	O
,	O
simplicity	O
and	O
small	O
footprint	O
.	O
</s>
<s>
Because	O
of	O
that	O
,	O
unlike	O
most	O
recent	O
GUI	O
engines	O
,	O
it	O
does	O
not	O
use	O
an	O
event-driven	B-Application
architecture	I-Application
.	O
</s>
<s>
Mouse	O
control	O
appears	O
to	O
be	O
supported	O
in	O
the	O
source	O
code	O
,	O
using	O
GPM	B-Language
(	O
a	O
mouse-driver	O
)	O
but	O
many	O
users	O
report	O
Newt	B-Language
and	O
Whiptail	O
not	O
responding	O
to	O
mouse	O
control	O
.	O
</s>
<s>
These	O
restrictions	O
simplify	O
the	O
design	O
of	O
the	O
library	O
as	O
well	O
as	O
the	O
code	O
of	O
programs	O
using	O
it	O
,	O
though	O
they	O
impose	O
limitations	O
on	O
user	B-Application
interface	I-Application
design	O
.	O
</s>
<s>
The	O
capabilities	O
are	O
fully	O
adequate	O
for	O
the	O
installation	O
process	O
,	O
and	O
Newt	B-Language
was	O
used	O
for	O
the	O
user	O
friendly	O
OS	O
installers	O
.	O
</s>
<s>
It	O
is	O
also	O
used	O
in	O
some	O
system	O
tools	O
(	O
like	O
Partimage	B-Application
)	O
that	O
focus	O
more	O
on	O
functionality	O
than	O
on	O
looking	O
attractive	O
to	O
the	O
end	O
user	O
.	O
</s>
<s>
Newt	B-Language
is	O
written	O
in	O
C	B-Language
.	O
However	O
,	O
there	O
are	O
bindings	O
to	O
other	O
languages	O
.	O
</s>
<s>
gNewt	O
project	O
(	O
no	O
longer	O
active	O
)	O
provides	O
an	O
alternative	O
implementation	O
that	O
uses	O
GTK	B-Application
instead	O
of	O
the	O
text	B-Application
based	I-Application
interface	I-Application
.	O
</s>
<s>
It	O
is	O
fully	O
compatible	O
with	O
the	O
official	O
Newt	B-Language
implementation	O
and	O
can	O
be	O
replaced	O
at	O
run	O
time	O
,	O
without	O
recompilation	O
.	O
</s>
<s>
Like	O
any	O
other	O
GTK	B-Application
components	O
,	O
gNewt	O
controls	O
can	O
also	O
use	O
mouse	O
input	O
whereas	O
the	O
original	O
Newt	B-Language
only	O
supports	O
the	O
keyboard	O
.	O
</s>
