<s>
Blorb	B-Application
is	O
a	O
package	B-Application
format	I-Application
for	O
interactive	O
fiction	O
games	O
.	O
</s>
<s>
Blorb	B-Application
's	O
purpose	O
is	O
to	O
bind	O
these	O
together	O
into	O
one	O
file	O
.	O
</s>
<s>
The	O
format	O
was	O
devised	O
by	O
Andrew	O
Plotkin	O
and	O
is	O
used	O
in	O
both	O
the	O
Z-machine	O
and	O
Glulx	O
virtual	B-Architecture
machines	I-Architecture
,	O
as	O
well	O
as	O
by	O
the	O
Glk	B-Device
library	O
.	O
</s>
<s>
Since	O
all	O
Z-machine	O
games	O
were	O
produced	O
by	O
Infocom	O
,	O
there	O
was	O
also	O
no	O
chance	O
that	O
resources	O
would	O
be	O
shipped	O
in	O
a	O
format	O
which	O
a	O
user	O
's	O
interpreter	B-Application
program	O
could	O
not	O
handle	O
.	O
</s>
<s>
Blorb	B-Application
is	O
needed	O
because	O
neither	O
of	O
these	O
assumptions	O
hold	O
true	O
in	O
modern	O
times	O
:	O
games	O
are	O
typically	O
downloaded	O
as	O
single	O
files	O
,	O
and	O
a	O
user	O
may	O
be	O
using	O
any	O
of	O
a	O
large	O
number	O
of	O
interpreters	B-Application
.	O
</s>
<s>
A	O
Blorb	B-Application
file	O
may	O
optionally	O
include	O
the	O
executable	B-Application
code	I-Application
of	O
the	O
game	O
itself	O
.	O
</s>
<s>
This	O
allows	O
authors	O
of	O
modern	O
games	O
to	O
ship	O
one	O
file	O
containing	O
everything	O
needed	O
to	O
play	O
the	O
game	O
,	O
while	O
also	O
allowing	O
the	O
creation	O
of	O
resource	O
files	O
for	O
classic	O
Infocom	O
games	O
without	O
running	O
the	O
risk	O
of	O
copyright	O
infringement	O
by	O
distributing	O
Infocom	O
's	O
Z-machine	O
executable	B-Application
code	I-Application
.	O
</s>
<s>
Glulx	O
games	O
are	O
almost	O
always	O
shipped	O
in	O
the	O
Blorb	B-Application
format	O
.	O
</s>
<s>
As	O
of	O
2004	O
Blorb	B-Application
files	O
are	O
supported	O
by	O
all	O
Glk	B-Device
interactive	O
fiction	O
interpreters	B-Application
,	O
including	O
Nitfol	O
and	O
Glulxe	O
.	O
</s>
<s>
The	O
Blorb	B-Application
format	O
continues	O
the	O
tradition	O
of	O
naming	O
interactive	O
fiction	O
tools	O
after	O
spells	O
in	O
Infocom	O
's	O
Enchanter	B-Application
trilogy	O
.	O
</s>
<s>
Blorb	B-Application
was	O
a	O
spell	O
to	O
bind	O
objects	O
into	O
boxes	O
.	O
</s>
<s>
Blorb	B-Application
is	O
an	O
IFF	B-Device
format	O
,	O
with	O
FORM	O
IFRS	O
.	O
</s>
<s>
The	O
MIME	B-Protocol
type	O
commonly	O
in	O
use	O
is	O
"	O
application/x	O
-blorb	O
"	O
,	O
and	O
the	O
filename	O
extension	O
is	O
"	O
.blorb	O
"	O
,	O
or	O
,	O
for	O
systems	O
where	O
filename	O
extensions	O
are	O
limited	O
to	O
three	O
characters	O
,	O
"	O
.blb	O
"	O
.	O
</s>
<s>
Blorb	B-Application
files	O
containing	O
Z-code	O
games	O
may	O
be	O
named	O
with	O
the	O
extension	O
"	O
.zblorb	B-Application
"	O
or	O
"	O
.zlb	O
"	O
;	O
or	O
,	O
for	O
Glulx	O
games	O
,	O
"	O
.gblorb	B-Application
"	O
or	O
"	O
.glb	O
"	O
.	O
</s>
<s>
These	O
alternative	O
extensions	O
are	O
intended	O
to	O
make	O
it	O
easier	O
for	O
interpreters	B-Application
to	O
ascertain	O
the	O
type	O
of	O
game	O
contained	O
inside	O
.	O
</s>
