can anyone explain how I can extract subtitles using spuunmux.exe and also what the options are?

below is the list of the possible commands. I'd also like to use the palette file option so what format that should be also? What purpose does the verbosity level also serve?

TIA

Use: spuunmux [options] [input file] [input file] ...

options:
-o <name> base name for script and images [sub]
-v <level> verbosity level [0]
-f resize images to full size [720x576]
-s <stream> number of the substream to extract [0]
-p <file> name of file with dvd palette [none]
if palette file ends with .rgb
treated as a RGB
else as a YCbCr color
-h print this help
-V print version number