<s>
rTorrent	B-Language
is	O
a	O
text-based	B-Application
BitTorrent	B-Protocol
client	O
written	O
in	O
C++	B-Language
,	O
based	O
on	O
the	O
ncurses	B-Language
and	O
libTorrent	B-Language
(	O
not	O
to	O
be	O
confused	O
with	O
libtorrent	B-Language
)	O
libraries	O
for	O
Unix	B-Application
,	O
whose	O
author	O
's	O
goal	O
is	O
"	O
a	O
focus	O
on	O
high	O
performance	O
and	O
good	O
code	O
"	O
.	O
</s>
<s>
The	O
library	O
differentiates	O
itself	O
from	O
other	O
implementations	O
by	O
transferring	O
data	O
directly	O
between	O
file	B-Architecture
pages	I-Architecture
mapped	O
to	O
memory	O
by	O
the	O
mmap( )	O
function	O
and	O
the	O
network	B-Protocol
stack	I-Protocol
.	O
</s>
<s>
On	O
high-bandwidth	O
connections	O
,	O
it	O
claims	O
to	O
be	O
able	O
to	O
seed	O
at	O
three	O
times	O
the	O
speed	O
of	O
the	O
official	B-Protocol
client	I-Protocol
.	O
</s>
<s>
rTorrent	B-Language
packages	O
are	O
available	O
for	O
various	O
Linux	B-Application
distributions	I-Application
and	O
Unix-like	B-Operating_System
systems	I-Operating_System
,	O
and	O
it	O
will	O
compile	O
and	O
run	O
on	O
nearly	O
every	O
POSIX-compliant	O
operating	B-General_Concept
system	I-General_Concept
,	O
such	O
as	O
FreeBSD	B-Operating_System
and	O
macOS	B-Application
.	O
</s>
<s>
rTorrent	B-Language
uses	O
the	O
ncurses	B-Language
library	O
and	O
is	O
suitable	O
for	O
use	O
with	O
GNU	B-Application
Screen	I-Application
or	O
Tmux	B-Language
;	O
it	O
uses	O
commands	O
such	O
as	O
Carriage	O
return	O
to	O
load	O
a	O
torrent	B-Protocol
,	O
after	O
which	O
^S	O
can	O
be	O
used	O
to	O
start	O
a	O
torrent	B-Protocol
(	O
where	O
^	O
is	O
shorthand	O
for	O
Ctrl	O
key	O
)	O
,	O
backspace	B-Device
can	O
be	O
used	O
to	O
automatically	O
start	O
a	O
torrent	B-Protocol
once	O
it	O
is	O
loaded	O
,	O
making	O
a	O
subsequent	O
issue	O
of	O
^S	O
unnecessary	O
,	O
^K	O
for	O
stop	O
,	O
and	O
^D	O
for	O
pause	O
,	O
or	O
if	O
already	O
paused	O
or	O
stopped	O
,	O
^D	O
again	O
to	O
delete	O
the	O
torrent	B-Protocol
.	O
</s>
<s>
It	O
supports	O
saving	O
of	O
sessions	O
and	O
allows	O
the	O
user	O
to	O
add	O
and	O
remove	O
torrents	B-Protocol
.	O
</s>
<s>
It	O
also	O
supports	O
partial	O
downloading	O
of	O
multi-file	O
torrents	B-Protocol
.	O
</s>
<s>
In	O
the	O
release	O
of	O
rTorrent-0.7.0	O
support	O
for	O
BitTorrent	B-Protocol
protocol	I-Protocol
encryption	I-Protocol
was	O
also	O
implemented	O
.	O
</s>
<s>
PEX	O
,	O
DHT	B-Operating_System
and	O
initial	O
seeding	O
were	O
recently	O
implemented	O
in	O
rTorrent	B-Language
.	O
</s>
<s>
rTorrent	B-Language
can	O
be	O
controlled	O
via	O
XML-RPC	B-Protocol
over	O
SCGI	B-Protocol
.	O
</s>
