<s>
Pico	B-Language
is	O
a	O
programming	O
language	O
developed	O
at	O
the	O
Software	O
Languages	O
Lab	O
at	O
Vrije	O
Universiteit	O
Brussel	O
.	O
</s>
<s>
Pico	B-Language
can	O
be	O
seen	O
as	O
an	O
effort	O
to	O
generate	O
a	O
palatable	O
and	O
enjoyable	O
language	O
for	O
people	O
who	O
do	O
not	O
want	O
to	O
study	O
hard	O
for	O
the	O
elegance	O
and	O
power	O
of	O
a	O
language	O
.	O
</s>
<s>
They	O
have	O
done	O
it	O
by	O
adapting	O
Scheme	B-Language
's	I-Language
semantics	B-Application
.	O
</s>
<s>
While	O
designing	O
Pico	B-Language
,	O
the	O
Software	O
Languages	O
Lab	O
was	O
inspired	O
by	O
the	O
Abelson	O
and	O
Sussman	O
's	O
book	O
"	O
Structure	B-Language
and	I-Language
Interpretation	I-Language
of	I-Language
Computer	I-Language
Programs	I-Language
"	O
.	O
</s>
<s>
Pico	B-Language
should	O
be	O
interpreted	O
as	O
'	O
small	O
 '	O
,	O
the	O
idea	O
was	O
to	O
create	O
a	O
small	O
language	O
for	O
educational	O
purposes	O
.	O
</s>
<s>
Variables	O
are	O
dynamically	O
typed	O
;	O
Pico	B-Language
uses	O
static	B-Language
scope	I-Language
.	O
</s>
<s>
Functions	O
are	O
first-class	O
objects	O
in	O
Pico	B-Language
.	O
</s>
<s>
Operators	O
can	O
be	O
used	O
as	O
prefix	O
or	O
infix	O
in	O
Pico	B-Language
:	O
</s>
<s>
Pico	B-Language
has	O
the	O
following	O
types	O
:	O
string	O
,	O
integer	O
,	O
real	O
and	O
tables	O
.	O
</s>
<s>
Boolean	O
types	O
are	O
represented	O
by	O
functions	O
(	O
as	O
in	O
lambda	B-Language
calculus	I-Language
)	O
.	O
</s>
