commands: Allow cycling subtitles backwards with 'J'

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32680 b3059339-0415-0410-9bf9-f77b7e298cf2

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32714 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 13 insertions, 8 deletions

diff --git a/DOCS/tech/slave.txt b/DOCS/tech/slave.txt
index e923232689..b53fa575b0 100644
--- a/DOCS/tech/slave.txt
+++ b/DOCS/tech/slave.txt
@@ -350,7 +350,8 @@ sub_select [value]
     Display subtitle with index [value]. Turn subtitle display off if
     [value] is -1 or greater than the highest available subtitle index.
     Cycle through the available subtitles if [value] is omitted or less
-    than -1. Supported subtitle sources are -sub options on the command
+    than -1 (forward or backward respectively).
+    Supported subtitle sources are -sub options on the command
     line, VOBsubs, DVD subtitles, and Ogg and Matroska text streams.
     This command is mainly for cycling all subtitles, if you want to set
     a specific subtitle, use sub_file, sub_vob, or sub_demux.
@@ -360,26 +361,30 @@ sub_source [source]
     SUB_SOURCE_SUBS   (0) for file subs
     SUB_SOURCE_VOBSUB (1) for VOBsub files
     SUB_SOURCE_DEMUX  (2) for subtitle embedded in the media file or DVD subs.
-    If [source] is -1, will turn off subtitle display. If [source] less than -1,
-    will cycle between the first subtitle of each currently available sources.
+    If [source] is -1, will turn off subtitle display.
+    If [value] is omitted or less than -1, will cycle between the first subtitle
+    of each currently available source (forward or backward respectively).
 
 sub_file [value]
     Display subtitle specifid by [value] for file subs. The [value] is
     corresponding to ID_FILE_SUB_ID values reported by '-identify'.
-    If [value] is -1, will turn off subtitle display. If [value] less than -1,
-    will cycle all file subs.
+    If [value] is -1, will turn off subtitle display.
+    If [value] is omitted or less than -1, will cycle all file subs
+    (forward or backward respectively).
 
 sub_vob [value]
     Display subtitle specifid by [value] for vobsubs. The [value] is
     corresponding to ID_VOBSUB_ID values reported by '-identify'.
-    If [value] is -1, will turn off subtitle display. If [value] less than -1,
-    will cycle all vobsubs.
+    If [value] is -1, will turn off subtitle display.
+    If [value] is omitted or less than -1, will cycle all vobsubs
+    (forward or backward respectively).
 
 sub_demux [value]
     Display subtitle specifid by [value] for subtitles from DVD or embedded
     in media file. The [value] is corresponding to ID_SUBTITLE_ID values
     reported by '-identify'. If [value] is -1, will turn off subtitle display.
-    If [value] less than -1, will cycle all DVD subs or embedded subs.
+    If [value] is omitted or less than -1, will cycle all DVD subs or embedded subs
+    (forward or backward respectively).
 
 sub_scale <value> [abs]
     Adjust the subtitle size by +/- <value> or set it to <value> when [abs]