<s>
Emulator	O
High-level	O
Language	O
Application	O
Program	O
Interface	O
(	O
EHLLAPI	B-Application
)	O
is	O
an	O
enhanced	O
version	O
of	O
HLLAPI	B-Application
.	O
</s>
<s>
It	O
was	O
introduced	O
in	O
1986	O
by	O
IBM	O
in	O
association	O
with	O
the	O
IBM	B-Device
3270	I-Device
PC	I-Device
to	O
provide	O
access	O
from	O
a	O
DOS	O
PC	O
environment	O
to	O
data	O
on	O
an	O
IBM	O
mainframe	O
.	O
</s>
<s>
EHLLAPI	B-Application
can	O
be	O
used	O
to	O
determine	O
screen	O
characters	O
,	O
track	O
and	O
send	O
keystrokes	O
,	O
check	O
the	O
host	O
status	O
and	O
perform	O
file	O
transfers	O
.	O
</s>
<s>
EHLLAPI	B-Application
could	O
map	O
a	O
screen	O
between	O
different	O
IBM	B-Operating_System
3270	I-Operating_System
legacy	O
applications	O
,	O
allowing	O
information	O
to	O
be	O
transferred	O
between	O
the	O
two	O
.	O
</s>
