<s>
Plus	O
is	O
a	O
"	O
Pascal-like	O
"	O
system	O
implementation	O
language	O
from	O
the	O
University	O
of	O
British	O
Columbia	O
(	O
UBC	O
)	O
,	O
Canada	O
,	O
based	O
on	O
the	O
SUE	O
system	O
language	O
developed	O
at	O
the	O
University	O
of	O
Toronto	O
,	O
c	B-Language
.	O
1971	O
.	O
</s>
<s>
Plus	O
was	O
developed	O
at	O
the	O
University	O
of	O
British	O
Columbia	O
(	O
UBC	O
)	O
Computing	O
Centre	O
by	O
Alan	O
Ballard	O
and	O
Paul	O
Whaley	O
for	O
use	O
with	O
and	O
for	O
the	O
development	O
of	O
the	O
Michigan	B-Application
Terminal	I-Application
System	I-Application
(	O
MTS	O
)	O
,	O
but	O
the	O
code	O
generated	O
by	O
the	O
compiler	O
is	O
not	O
operating	O
system	O
dependent	O
and	O
so	O
is	O
not	O
limited	O
to	O
use	O
with	O
or	O
the	O
development	O
of	O
MTS	O
.	O
</s>
<s>
The	O
UBC	B-Language
Plus	I-Language
compiler	O
is	O
written	O
largely	O
in	O
Plus	O
,	O
runs	O
under	O
the	O
Michigan	B-Application
Terminal	I-Application
System	I-Application
(	O
MTS	O
)	O
on	O
IBM	B-Device
S/370	I-Device
or	O
compatible	O
hardware	O
or	O
under	O
IBM	O
's	O
OS/VS1	B-Application
,	O
and	O
generates	O
code	O
for	O
the	O
IBM	B-Device
S/370	I-Device
,	O
the	O
DEC	B-Device
PDP-11	I-Device
,	O
or	O
the	O
Motorola	B-Device
68000	I-Device
architectures	O
.	O
</s>
<s>
Plus	O
is	O
based	O
to	O
a	O
large	O
extent	O
on	O
the	O
SUE	O
System	O
Language	O
developed	O
at	O
the	O
University	O
of	O
Toronto	O
,	O
c	B-Language
.	O
1971	O
.	O
</s>
<s>
The	O
SUE	O
language	O
was	O
derived	O
,	O
particularly	O
in	O
its	O
data	O
structure	O
facilities	O
from	O
Pascal	B-Application
.	O
</s>
<s>
Plus	O
is	O
superficially	O
quite	O
different	O
from	O
SUE	O
or	O
Pascal	B-Application
;	O
however	O
the	O
underlying	O
language	O
semantics	O
are	O
really	O
quite	O
similar	O
.	O
</s>
<s>
Users	O
familiar	O
with	O
the	O
C	B-Language
programming	I-Language
language	I-Language
will	O
also	O
recognize	O
much	O
of	O
its	O
structure	O
and	O
semantics	O
in	O
PLUS	O
.	O
</s>
<s>
The	O
manual	O
,	O
UBC	B-Language
PLUS	I-Language
:	O
The	O
Plus	O
Programming	O
Language	O
,	O
is	O
available	O
.	O
</s>
