[description]
The percent argument must be an integer between 0 and 100, inclusively.
[/description]
+
+[subcommand ff]
+ purpose = set playback position relative to the current position
+ non-opts-name = seconds
+ [description]
+ Negative values mean to jump backwards the given amount of seconds.
+ [/description]
+
+[subcommand ls]
+ purpose = list the playlist
+ [description]
+ This prints all paths of the playlist. The currently
+ active file is marked with an asterisk.
+ [/description]