<s>
MultiLisp	B-Language
is	O
a	O
functional	B-Language
programming	I-Language
language	I-Language
,	O
a	O
dialect	O
of	O
the	O
language	O
Lisp	B-Language
,	O
and	O
of	O
its	O
dialect	O
Scheme	B-Language
,	O
extended	O
with	O
constructs	O
for	O
parallel	B-Operating_System
computing	I-Operating_System
execution	O
and	O
shared	B-Operating_System
memory	I-Operating_System
.	O
</s>
<s>
These	O
extensions	O
involve	O
side	O
effects	O
,	O
rendering	O
MultiLisp	B-Language
nondeterministic	O
.	O
</s>
<s>
Along	O
with	O
its	O
parallel-programming	O
extensions	O
,	O
MultiLisp	B-Language
also	O
had	O
some	O
unusual	O
garbage	B-General_Concept
collection	I-General_Concept
and	O
task	O
scheduling	O
algorithms	O
.	O
</s>
<s>
Like	O
Scheme	B-Language
,	O
MultiLisp	B-Language
was	O
optimized	O
for	O
symbolic	B-Algorithm
computing	I-Algorithm
.	O
</s>
<s>
Unlike	O
some	O
parallel	B-Operating_System
programming	I-Operating_System
languages	O
,	O
MultiLisp	B-Language
incorporated	O
constructs	O
for	O
causing	O
side	O
effects	O
and	O
for	O
explicitly	O
introducing	O
parallelism	B-Operating_System
.	O
</s>
<s>
It	O
was	O
designed	O
by	O
Robert	O
H	O
.	O
Halstead	O
Jr.	O
,	O
in	O
the	O
early	O
1980s	O
for	O
use	O
on	O
the	O
32-processor	O
Concert	O
multiprocessor	B-Operating_System
then	O
being	O
developed	O
at	O
Massachusetts	O
Institute	O
of	O
Technology	O
(	O
MIT	O
)	O
and	O
implemented	O
in	O
Interlisp	B-Language
.	O
</s>
<s>
It	O
influenced	O
the	O
development	O
of	O
the	O
Scheme	B-Language
dialects	O
Gambit	B-Language
,	O
and	O
Interlisp-VAX	O
.	O
</s>
<s>
It	O
also	O
makes	O
use	O
of	O
a	O
parallel	B-Operating_System
programming	I-Operating_System
construct	O
called	O
futures	B-Operating_System
,	O
which	O
resembles	O
forking	B-Language
,	O
combined	O
with	O
lazy	O
evaluation	O
.	O
</s>
<s>
can	O
be	O
written	O
,	O
which	O
will	O
overlap	O
the	O
evaluation	O
of	O
the	O
expressions	O
A	O
and	O
B	O
,	O
not	O
only	O
with	O
each	O
other	O
,	O
but	O
with	O
computations	O
that	O
use	O
the	O
result	O
of	O
the	O
cons	B-Protocol
call	O
,	O
until	O
an	O
operation	O
is	O
performed	O
that	O
needs	O
correct	O
information	O
about	O
the	O
value	O
of	O
A	O
or	O
B	O
.	O
</s>
