add -a and -d options

1 files changed, 16 insertions, 3 deletions

diff --git a/miragextract.rst b/miragextract.rst
index 5a097f8..3ae82db 100644
--- a/miragextract.rst
+++ b/miragextract.rst
@@ -41,6 +41,10 @@ OPTIONS
 
 -l     Lists the tracks in the image without extracting them.
 
+-a     Extract only audio tracks.
+
+-d     Extract only data tracks.
+
 -s     Swaps bytes in audio tracks. Use this if your audio files sound
        like white noise or gibberish.
 
@@ -48,12 +52,19 @@ OPTIONS
        Default behaviour is to extract all tracks.
 
 -b     Sets the base filename for the output files. Default is 'track'.
+       See also the -n option. Beware of using filenames with directory
+       separators in them: the output files will be written in the same
+       dir as the input file. Hopefully you have permission to write there.
+
+-n     Set the base filename to the input filename, minus its extension.
+       E.g. for foo.cue, this is the same as saying "-b foo".
 
 -f     Sets the format and filename extension for the output files.
-       Choices are 'wav', 'ogg', 'flac', 'cdda' (raw CD audio). Default is 'wav'.
+       Choices are **wav**, **ogg**, **flac**, **cdda** (raw CD audio). Default is **wav**.
 
--q     Quality setting for .ogg and .flac output files. Integer from 0
-       to 10. Default is 7.
+-q     Quality setting for ogg and flac output files. Integer from 0
+       to 10. Default is 7. Has very little effect on flac, and no effect on
+       wav or cdda output.
 
 NOTES
 =====
@@ -61,6 +72,8 @@ NOTES
 Image-file is e.g. a .cue, .ccd, .nrg, .mds, or anything else supported
 by libmirage. See the README for your version of libmirage for details.
 
+Output files will be overwritten if they already exist, with no prompting.
+
 Output audio files are named track01.wav, track02.wav, etc by default. The
 'track' part of the name can be set with -b, and the extension will
 match the encoding set with -f. Note that mp3 is NOT a valid -f option.