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-rw-r--r--DOCS/tech/slave.txt10
1 files changed, 6 insertions, 4 deletions
diff --git a/DOCS/tech/slave.txt b/DOCS/tech/slave.txt
index 940b5d279c..59b5374379 100644
--- a/DOCS/tech/slave.txt
+++ b/DOCS/tech/slave.txt
@@ -101,10 +101,12 @@ sub_visibility
get_sub_visibility
Print out subtitle visibility (1 == on, 0 == off).
-sub_select
- Cycle through the available subtitles. Supported subtitle sources are
- -sub options on the command line, VOBsubs, DVD subtitles, and Ogg text
- streams.
+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
+ line, VOBsubs, DVD subtitles, and Ogg and Matroska text streams.
sub_log
Logs the current or last displayed subtitle together with filename