<s>
Rapira	B-Language
(	O
,	O
rapier	O
)	O
is	O
an	O
educational	O
procedural	B-Application
programming	I-Application
language	I-Application
developed	O
in	O
the	O
Soviet	O
Union	O
and	O
implemented	O
on	O
the	O
Agat	B-Device
computer	I-Device
,	O
PDP-11	B-Device
clones	O
(	O
Electronika	O
,	O
DVK	O
,	O
BK	O
series	O
)	O
,	O
and	O
Intel	B-General_Concept
8080	I-General_Concept
and	O
Zilog	B-General_Concept
Z80	I-General_Concept
clones	O
(	O
Korvet	O
)	O
.	O
</s>
<s>
It	O
is	O
interpreted	B-Application
with	O
a	O
dynamic	O
type	O
system	O
and	O
high	B-Language
level	I-Language
constructions	O
.	O
</s>
<s>
It	O
was	O
considered	O
more	O
elegant	O
and	O
easier	O
to	O
use	O
than	O
Pascal	B-Application
implementations	O
of	O
the	O
time	O
.	O
</s>
<s>
Rapira	B-Language
was	O
used	O
to	O
teach	O
computer	B-General_Concept
programming	I-General_Concept
in	O
Soviet	O
schools	O
.	O
</s>
<s>
The	O
integrated	B-Application
development	I-Application
environment	I-Application
included	O
a	O
text	O
editor	O
and	O
a	O
debugger	O
.	O
</s>
<s>
Rapira	B-Language
's	O
ideology	O
was	O
based	O
on	O
languages	O
such	O
as	O
POP-2	B-Language
and	O
SETL	B-Language
,	O
with	O
strong	O
influences	O
from	O
ALGOL	B-Language
.	O
</s>
<s>
Consequently	O
,	O
for	O
example	O
,	O
Rapira	B-Language
implements	O
a	O
very	O
strong	O
,	O
flexible	O
,	O
and	O
interesting	O
data	O
structure	O
,	O
named	O
a	O
tuple''	O
.	O
</s>
<s>
in	O
Rapira	B-Language
,	O
these	O
are	O
heterogeneous	O
lists	O
with	O
allowed	O
operations	O
such	O
as	O
indexing	O
,	O
joining	O
,	O
length	O
count	O
,	O
getting	O
of	O
sublist	O
,	O
easy	O
comparison	O
,	O
etc	O
.	O
</s>
