<s>
Rascal	O
is	O
an	O
experimental	O
domain-specific	B-Language
language	I-Language
for	O
metaprogramming	B-Application
,	O
such	O
as	O
static	O
code	O
analysis	O
,	O
program	B-Application
transformation	I-Application
,	O
program	B-Application
generation	I-Application
and	O
implementation	O
of	O
domain-specific	B-Language
languages	I-Language
.	O
</s>
<s>
It	O
includes	O
primitives	O
from	O
relational	B-Application
calculus	I-Application
and	O
term	O
rewriting	O
.	O
</s>
