<s>
BETA	B-Language
is	O
a	O
pure	O
object-oriented	B-Language
language	I-Language
originating	O
within	O
the	O
"	O
Scandinavian	O
School	O
"	O
in	O
object-orientation	O
where	O
the	O
first	O
object-oriented	B-Language
language	I-Language
Simula	B-Language
was	O
developed	O
.	O
</s>
<s>
From	O
a	O
technical	O
perspective	O
,	O
BETA	B-Language
provides	O
several	O
unique	O
features	O
.	O
</s>
<s>
A	O
consequence	O
of	O
this	O
is	O
that	O
BETA	B-Language
supports	O
nested	O
classes	O
.	O
</s>
<s>
Classes	O
can	O
be	O
virtually	O
defined	O
,	O
much	O
like	O
virtual	O
methods	O
can	O
be	O
in	O
most	O
object-oriented	B-Language
programming	I-Language
languages	I-Language
.	O
</s>
<s>
BETA	B-Language
supports	O
the	O
object-oriented	B-Language
perspective	O
on	O
programming	O
and	O
has	O
comprehensive	O
facilities	O
for	O
procedural	O
and	O
functional	O
programming	O
.	O
</s>
<s>
BETA	B-Language
is	O
a	O
statically	O
typed	O
language	O
like	O
Simula	B-Language
,	O
Eiffel	B-Language
and	O
C++	B-Language
,	O
with	O
most	O
type	O
checking	O
done	O
at	O
compile-time	O
.	O
</s>
<s>
BETA	B-Language
aims	O
to	O
achieve	O
an	O
optimal	O
balance	O
between	O
compile-time	O
type	O
checking	O
and	O
run-time	O
type	O
checking	O
.	O
</s>
<s>
In	O
another	O
programming	O
language	O
,	O
such	O
as	O
C++	B-Language
,	O
one	O
would	O
have	O
several	O
classes	O
and	O
procedures	O
.	O
</s>
<s>
BETA	B-Language
expresses	O
both	O
of	O
these	O
concepts	O
using	O
patterns	O
.	O
</s>
