the $ means command prompt.
so you would run the command as part of a script or when you ran the emulator
I havn't tested it yet but this is what the developer said to do.
edit: ok, verified running:
tvservice -c "NTSC 4:3 P" ; fbset -depth 8 ; fbset -depth 32; tvservice -s
at command prompt gives you 240p for emulator.
throwing out: tvservice -c "NTSC 4:3" ; fbset -depth 8 ; fbset -depth 32; tvservice -s
put you back to interlaced mode for your front end.
so you have to call the commands at run time and run end of emulator.
I'm just going to use a 320x240 res theme. :)