<s>
Spacemacs	B-Application
is	O
a	O
configuration	O
framework	B-Application
for	O
GNU	B-Application
Emacs	I-Application
.	O
</s>
<s>
It	O
can	O
take	O
advantage	O
of	O
all	O
of	O
GNU	B-Application
Emacs	I-Application
 '	O
features	O
,	O
including	O
both	O
graphical	B-Application
and	O
command-line	B-Application
user	O
interfaces	O
,	O
and	O
being	O
executable	O
under	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
and	O
within	O
a	O
Unix	B-Application
shell	I-Application
terminal	O
.	O
</s>
<s>
It	O
is	O
free	B-License
and	I-License
open-source	I-License
software	I-License
(	O
FOSS	B-License
)	O
released	O
under	O
the	O
GPL-3.0-or-later	B-License
license	O
.	O
</s>
<s>
Spacemacs	B-Application
consists	O
mainly	O
of	O
configuration	B-Protocol
files	I-Protocol
,	O
pre-defined	O
internal	O
commands	B-Application
,	O
and	O
configurations	O
for	O
various	O
plug-ins	B-Application
(	O
called	O
'	O
packages	O
 '	O
)	O
.	O
</s>
<s>
It	O
features	O
a	O
novel	O
mnemonic	O
key	O
binding	O
design	O
(	O
e.g.	O
,	O
commands	B-Application
for	O
file	O
manipulation	O
often	O
start	O
with	O
"	O
f	O
"	O
,	O
)	O
which	O
attempts	O
to	O
improve	O
ergonomics	O
(	O
and	O
avoid	O
emacs	B-Application
pinky	O
)	O
,	O
a	O
system	O
for	O
adding	O
or	O
excluding	O
pre-configured	O
features	O
called	O
'	O
layers	O
 '	O
,	O
and	O
includes	O
verbose	O
software	O
documentation	O
.	O
</s>
<s>
It	O
has	O
three	O
user-selectable	O
input	O
modes	O
:	O
Emacs	B-Application
mode	O
,	O
Vim	B-Application
mode	O
(	O
based	O
on	O
the	O
evil	O
Emacs	B-Application
package	O
for	O
Vim	B-Application
emulation	O
)	O
,	O
and	O
Hybrid	O
mode	O
.	O
</s>
<s>
,	O
its	O
repository	B-General_Concept
on	O
GitHub	B-Application
has	O
been	O
starred	O
over	O
21,100	O
times	O
and	O
has	O
over	O
11,300	O
commits	B-Protocol
.	O
</s>
