<s>
Approx	B-Application
is	O
a	O
caching	O
proxy	O
server	O
for	O
Debian	O
archive	O
files	O
.	O
</s>
<s>
It	O
is	O
an	O
HTTP-based	O
proxy	O
server	O
for	O
Debian-style	O
package	O
archives	O
.	O
</s>
<s>
Approx	B-Application
can	O
save	O
time	O
and	O
network	O
bandwidth	O
if	O
.deb	O
packages	O
need	O
to	O
be	O
installed	O
or	O
upgraded	O
for	O
a	O
number	O
of	O
machines	O
on	O
a	O
local	B-General_Concept
network	I-General_Concept
.	O
</s>
<s>
The	O
approx	B-Application
cache	O
typically	O
requires	O
a	O
few	O
gigabytes	O
of	O
disk	O
space	O
.	O
</s>
<s>
Approx	B-Application
can	O
simplify	O
the	O
administration	B-Application
of	O
client	O
machines	O
;	O
repository	O
locations	O
need	O
only	O
be	O
changed	O
in	O
approx	B-Application
's	O
configuration	B-Protocol
file	I-Protocol
,	O
not	O
in	O
every	O
client	O
's	O
/etc/apt/sources.list	O
file	O
.	O
</s>
<s>
Approx	B-Application
can	O
be	O
used	O
as	O
a	O
replacement	O
for	O
apt-proxy	B-Application
,	O
with	O
no	O
need	O
to	O
modify	O
clients	O
 '	O
/etc/apt/sources.list	O
files	O
,	O
or	O
as	O
an	O
alternative	O
to	O
apt-cacher.	O
"	O
</s>
