<s>
Handkerchief	B-Application
is	O
a	O
2D	O
jump	O
and	O
run	O
shooter	O
video	O
game	O
developed	O
by	O
OPUS	O
Corp	O
.	O
and	O
published	O
by	O
Xsiv	O
Games	O
for	O
Microsoft	B-Application
Windows	I-Application
in	O
the	O
year	O
2000	O
.	O
</s>
<s>
The	O
game	O
's	O
executeable	O
file	O
is	O
named	O
"	O
HDKWIN.EXE	O
"	O
,	O
and	O
it	O
uses	O
.BMP	B-Device
format	O
for	O
sprites	O
and	O
.WAV	O
format	O
for	O
audio	O
.	O
</s>
