<s>
Obliq	B-Language
is	O
an	O
interpreted	B-Application
,	O
object-oriented	B-Language
programming	I-Language
language	I-Language
designed	O
to	O
make	O
distributed	B-Architecture
,	O
and	O
locally	O
multithreaded	B-Operating_System
,	O
computing	O
simpler	O
and	O
easier	O
to	O
program	O
,	O
while	O
providing	O
program	O
safety	O
and	O
an	O
implicit	O
type	O
system	O
.	O
</s>
<s>
The	O
interpreter	B-Application
is	O
written	O
in	O
Modula-3	B-Language
,	O
and	O
provides	O
Obliq	B-Language
with	O
full	O
access	O
to	O
Modula-3	B-Language
'	O
s	O
network	B-Architecture
objects	O
abilities	O
.	O
</s>
<s>
A	O
type	O
inference	O
algorithm	O
for	O
record	O
concatenation	O
,	O
subtyping	O
,	O
and	O
recursive	O
types	O
has	O
been	O
developed	O
for	O
Obliq	B-Language
.	O
</s>
<s>
Obliq	B-Language
's	O
syntax	O
is	O
very	O
similar	O
to	O
Modula-3	B-Language
,	O
the	O
biggest	O
difference	O
being	O
that	O
Obliq	B-Language
has	O
no	O
need	O
of	O
explicit	O
typed	O
variables	O
(	O
i.e.	O
,	O
a	O
variable	O
can	O
hold	O
any	O
data	O
type	O
allowed	O
by	O
the	O
type	O
checker	O
and	O
if	O
does	O
not	O
accepts	O
one	O
,	O
i.e.	O
,	O
a	O
given	O
expression	O
execution	O
error	O
will	O
display	O
)	O
although	O
explicit	O
type	O
declarations	O
are	O
allowed	O
and	O
ignored	O
by	O
the	O
interpreter	B-Application
.	O
</s>
<s>
The	O
basic	O
data	O
types	O
in	O
the	O
language	O
include	O
booleans	O
,	O
integers	O
,	O
reals	B-Algorithm
,	O
characters	O
,	O
strings	O
,	O
and	O
arrays	B-Data_Structure
.	O
</s>
<s>
Obliq	B-Language
supports	O
the	O
usual	O
set	O
of	O
sequential	O
control	O
structures	O
(	O
conditional	O
,	O
iteration	O
,	O
and	O
exception	O
handling	O
forms	O
)	O
,	O
and	O
special	O
control	O
forms	O
for	O
concurrency	O
(	O
mutexes	O
and	O
guarded	O
statements	O
)	O
.	O
</s>
<s>
Further	O
,	O
Obliq	B-Language
's	O
objects	O
can	O
be	O
cloned	O
and	O
safely	O
copied	O
remotely	O
by	O
any	O
machine	O
in	O
a	O
distributed	B-Architecture
network	B-Architecture
object	O
and	O
it	O
can	O
be	O
done	O
safely	O
and	O
transparently	B-Protocol
.	O
</s>
<s>
Obliq	B-Language
's	O
large	O
standard	B-Library
library	I-Library
provides	O
strong	O
support	O
for	O
mathematical	O
operations	O
,	O
input/output	B-General_Concept
(	O
I/O	B-General_Concept
)	O
,	O
persistence	B-Application
,	O
thread	B-Operating_System
control	O
,	O
graphics	O
,	O
and	O
animation	O
.	O
</s>
<s>
Distributed	B-Architecture
computing	I-Architecture
is	O
object-based	O
:	O
objects	O
hold	O
a	O
state	O
,	O
which	O
is	O
local	O
to	O
one	O
process	B-Operating_System
.	O
</s>
<s>
Objects	O
can	O
call	O
methods	O
of	O
other	O
objects	O
,	O
even	O
if	O
those	O
objects	O
are	O
on	O
another	O
machine	O
on	O
the	O
network	B-Architecture
.	O
</s>
<s>
Obliq	B-Language
objects	O
are	O
simply	O
collections	O
of	O
named	O
fields	O
(	O
similar	O
to	O
slots	O
in	O
Self	B-Operating_System
and	O
Smalltalk	B-Application
)	O
,	O
and	O
support	O
inheritance	B-Language
by	O
delegation	O
(	O
like	O
Self	B-Operating_System
)	O
.	O
</s>
<s>
The	O
common	O
uses	O
of	O
Obliq	B-Language
involve	O
programming	O
over	O
networks	O
,	O
3D	O
animation	O
,	O
and	O
distributed	B-Architecture
computing	I-Architecture
,	O
as	O
occurs	O
over	O
a	O
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
(	O
LAN	B-General_Concept
)	O
such	O
as	O
Ethernet	O
.	O
</s>
<s>
Obliq	B-Language
is	O
included	O
free	O
with	O
the	O
Digital	O
Equipment	O
Corporation	O
(	O
DEC	O
)	O
Modula-3	B-Language
distribution	O
,	O
but	O
other	O
free	O
versions	O
exist	O
elsewhere	O
including	O
precompiled	B-Language
binaries	O
for	O
several	O
operating	B-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
The	O
Collaborative	O
Active	O
Textbooks	O
(	O
CAT	O
)	O
developed	O
using	O
Obliq	B-Language
applets	O
and	O
the	O
Zeus	O
algorithm	O
animation	O
System	O
(	O
written	O
in	O
Modula-3	B-Language
)	O
.	O
</s>
<s>
Obliq	B-Language
applets	O
(	O
Oblets	O
)	O
special	O
web	O
browser	O
(	O
written	O
in	O
Modula-3	B-Language
)	O
Obliq	B-Language
web	O
page	O
embedded	O
applications	O
.	O
</s>
