<s>
The	O
EM	B-Application
intermediate	I-Application
language	I-Application
is	O
a	O
family	O
of	O
intermediate	O
languages	O
created	O
to	O
facilitate	O
the	O
production	O
of	O
portable	O
compilers	B-Language
.	O
</s>
<s>
The	O
language	O
's	O
specifications	O
were	O
created	O
by	O
Andrew	O
Tanenbaum	O
,	O
Hans	O
van	O
Staveren	O
,	O
Ed	O
G	O
.	O
Keizer	O
,	O
Johan	O
W	O
.	O
Stevenson	O
and	O
they	O
were	O
implemented	O
in	O
the	B-Device
Amsterdam	I-Device
Compiler	I-Device
Kit	I-Device
(	O
ACK	O
)	O
.	O
</s>
<s>
Unlike	O
the	O
GNU	B-Application
Compiler	I-Application
Collection	I-Application
's	O
(	O
GCC	B-Application
)	O
intermediate	O
language	O
,	O
EM	O
is	O
a	O
real	O
programming	O
language	O
and	O
could	O
be	O
implemented	O
in	O
hardware	O
;	O
a	O
number	O
of	O
the	O
language	O
front-ends	B-Architecture
have	O
libraries	B-Library
implemented	O
in	O
EM	O
assembly	B-Language
language	I-Language
.	O
</s>
