<s>
An	O
inverse	B-Application
parser	I-Application
,	O
as	O
its	O
name	O
suggests	O
,	O
is	O
a	O
parser	B-Language
that	O
works	O
in	O
reverse	O
.	O
</s>
<s>
A	O
few	O
years	O
later	O
,	O
it	O
was	O
independently	O
developed	O
by	O
Chris	O
Crawford	O
,	O
a	O
game	O
designer	O
,	O
for	O
his	O
game	O
,	O
Trust	B-Operating_System
&	I-Operating_System
Betrayal	I-Operating_System
:	I-Operating_System
The	I-Operating_System
Legacy	I-Operating_System
of	I-Operating_System
Siboot	I-Operating_System
,	O
but	O
the	O
implementation	O
was	O
different	O
enough	O
not	O
to	O
infringe	O
on	O
the	O
patent	O
.	O
</s>
