Some polishing about option direct_write_amount=

cdrskin/cdrskin.1

@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH CDRSKIN 1 "July 19, 2007"
+.TH CDRSKIN 1 "August 12, 2007"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -650,6 +650,32 @@ Number dev='Devicefile' rw-Permissions : 'Vendor' 'Model'
 Number and Devicefile can both be used with option dev=, but number is
 volatile (numbering changes if drives become busy).
 .TP
+.BI direct_write_amount= size
+Do not write a session with tracks but rather make an appropriate number of
+direct write operations with no preparations. Flushing the drive buffer will
+be the only finalization. It is advised to eject the media afterwards because
+the write operations circumvent the usual system i/o with its caches and
+buffers. By ejecting, those invalid memory copies get surely discarded.
+.br
+Only few media can be written this way: DVD-RAM, RVD+RW and overwriteable
+DVD-RW. Writing is restricted to the already formatted area of the media.
+.br
+Writing starts at byte 0 of the media or at the address given by option
+.B write_start_address= .
+Only the first track source is used as input for the write operations.
+The fifo (fs=) is disabled.
+.br
+Parameter
+.B size
+controls the amount of data to be written. Size 0 means that the track source
+shall be used up until EOF. In this case, the last write transaction gets
+padded up to the necessary size by zeros. Size -1 revokes direct writing
+and switches back to normal session oriented writing.
+.br
+Both, write_start_address and direct_write_amount size must be aligned to a
+media dependend transaction size. With DVD-RAM and DVD+RW this is 2k, with
+overwriteable DVD-RW it is 32k.
+.TP
 .BI fifo_start_at= size
 Do not wait for full fifo but start burning as soon as the given number
 of bytes is read. This option may be helpful to bring the average throughput

cdrskin/cdrskin_eng.html

@@ -246,7 +246,10 @@ Enhancements towards previous stable version cdrskin-0.3.6:
 <DT><H3>Development snapshot, version 0.3.9 :</H3></DT>
 <DD>Enhancements towards stable version 0.3.8.pl00:
 <UL>
+<LI>New option direct_write_amount=</LI>
+<!--
 <LI>none yet</LI>
+-->
 </UL>
 </DD>
 <DD>&nbsp;</DD>