<s>
dvd+	B-Application
rw-tools	I-Application
(	O
also	O
known	O
as	O
growisofs	B-Application
,	O
its	O
main	O
part	O
)	O
is	O
a	O
collection	O
of	O
open-source	B-Application
DVD	O
and	O
Blu-ray	O
Disc	O
tools	O
for	O
Linux	B-Application
,	O
OpenBSD	B-Operating_System
,	O
NetBSD	B-Device
,	O
FreeBSD	B-Operating_System
,	O
Solaris	B-Application
,	O
HP-UX	B-Application
,	O
IRIX	B-Operating_System
,	O
Windows	B-Application
and	O
OS	B-Operating_System
X	I-Operating_System
.	O
dvd+	B-Application
rw-tools	I-Application
does	O
not	O
operate	O
CD	O
media	O
.	O
</s>
<s>
The	O
package	O
itself	O
requires	O
another	O
program	O
which	O
is	O
used	O
to	O
create	O
ISO	B-Application
9660	I-Application
images	I-Application
on	O
the	O
fly	O
.	O
</s>
<s>
This	O
is	O
provided	O
by	O
mkisofs	B-Language
(	O
from	O
the	O
cdrtools	B-Language
package	O
)	O
or	O
genisoimage	B-Application
(	O
from	O
the	O
cdrkit	B-Application
package	O
)	O
or	O
a	O
symbolic	O
link	O
xorrisofs	O
to	O
xorriso	B-Application
(	O
from	O
the	O
libisoburn	O
or	O
GNU	O
xorriso	B-Application
package	O
)	O
.	O
</s>
<s>
Released	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
,	O
dvd+	B-Application
rw-tools	I-Application
is	O
free	B-Application
software	I-Application
.	O
</s>
<s>
growisofs	B-Application
burns	O
data	O
to	O
DVD	O
or	O
BD	O
media	O
.	O
</s>
<s>
dvd-ram-control	O
controls	O
Defect	B-Device
Management	I-Device
and	O
write	O
protection	O
of	O
DVD-RAM	O
media	O
.	O
</s>
<s>
growisofs	B-Application
is	O
a	O
SCSI/MMC	O
driver	O
in	O
userspace	O
for	O
burning	O
optical	O
media	O
,	O
like	O
cdrecord	B-Language
or	O
libburn	B-Application
.	O
</s>
<s>
Its	O
original	O
purpose	O
is	O
to	O
coordinate	O
burning	O
with	O
a	O
run	O
of	O
mkisofs	B-Language
,	O
so	O
that	O
ISO	B-Application
9660	I-Application
multi-session	O
becomes	O
possible	O
on	O
DVD+RW	O
media	O
.	O
</s>
<s>
Further	O
it	O
can	O
burn	O
preformatted	O
data	O
images	O
onto	O
the	O
media	O
,	O
not	O
needing	O
any	O
ISO	B-Application
9660	I-Application
formatter	O
program	O
for	O
this	O
task	O
.	O
</s>
<s>
growisofs	B-Application
employs	O
a	O
Ring	B-Data_Structure
Buffer	I-Data_Structure
in	O
userspace	O
to	O
smoothen	O
the	O
data	O
transmission	O
to	O
the	O
drive	O
.	O
</s>
