<s>
Gauche	B-Language
is	O
an	O
R7RS	O
Scheme	B-Language
implementation	O
.	O
</s>
<s>
It	O
is	O
designed	O
for	O
scripting	B-Language
in	O
a	O
production	O
environment	O
.	O
</s>
<s>
Gauche	B-Language
is	O
free	B-Application
software	I-Application
under	O
the	O
BSD	B-Operating_System
License	I-Operating_System
.	O
</s>
<s>
Quick	O
startup	O
-	O
Gauche	B-Language
includes	O
common	O
features	O
in	O
its	O
executable	O
,	O
while	O
less	O
common	O
functions	O
are	O
in	O
libraries	O
which	O
are	O
loaded	O
on	O
demand	O
.	O
</s>
<s>
Module	O
system	O
-	O
A	O
simple	O
module	O
system	O
,	O
API	O
compatible	O
to	O
STklos	B-Language
.	O
</s>
<s>
Object	O
system	O
-	O
CLOS-like	O
object	O
system	O
with	O
metaobject	O
protocol	O
.	O
</s>
<s>
Almost	O
API	O
compatible	O
to	O
STklos	B-Language
.	O
</s>
<s>
It	O
is	O
also	O
similar	O
to	O
Guile	B-Application
's	O
object	O
system	O
.	O
</s>
<s>
Built-in	O
system	O
interface	O
-	O
Gauche	B-Language
has	O
built-in	O
support	O
for	O
most	O
POSIX.1	O
system	O
calls	O
.	O
</s>
<s>
Scheme-level	O
API	O
conforms	O
to	O
SRFI-18	O
.	O
</s>
