<s>
A	O
Delta	B-Application
ISO	I-Application
is	O
used	O
to	O
update	O
an	O
ISO	B-General_Concept
image	I-General_Concept
which	O
contains	O
RPM	B-Application
Package	I-Application
Manager	I-Application
files	O
.	O
</s>
<s>
It	O
makes	O
use	O
of	O
DeltaRPMs	B-Application
(	O
a	O
form	O
of	O
Delta	B-Algorithm
compression	I-Algorithm
)	O
for	O
RPMs	B-Application
which	O
have	O
changed	O
between	O
the	O
old	O
and	O
new	O
versions	O
of	O
the	O
ISO	B-General_Concept
.	O
</s>
<s>
Delta	O
ISOs	B-General_Concept
can	O
save	O
disk	O
space	O
and	O
download	O
time	O
,	O
as	O
a	O
Delta	B-Application
ISO	I-Application
only	O
contains	O
the	O
things	O
that	O
were	O
updated	O
in	O
the	O
new	O
version	O
of	O
the	O
ISO	B-General_Concept
.	O
</s>
<s>
After	O
downloading	O
the	O
Delta	B-Application
ISO	I-Application
,	O
a	O
user	O
can	O
use	O
it	O
to	O
update	O
the	O
outdated	O
ISO	B-General_Concept
.	O
</s>
<s>
Some	O
RPM-based	B-Application
Linux	I-Application
distributions	I-Application
such	O
as	O
Fedora	O
and	O
openSUSE	B-Operating_System
make	O
use	O
of	O
this	O
technique	O
.	O
</s>
