<s>
BASIC-11	B-Language
was	O
a	O
dialect	O
of	O
the	O
basic	O
language	O
for	O
PDP-11	B-Device
operating	O
systems	O
such	O
as	O
RSX-11	B-Application
,	O
RT-11	B-Operating_System
,	O
TSX	O
and	O
TSX-Plus	O
.	O
</s>
