WSMOUSECFG_REVERSE_SCROLLING
params[pl.nparams++].key = WSMOUSECFG_REVERSE_SCROLLING;
case WSMOUSECFG_REVERSE_SCROLLING:
params[pl.nparams].key = WSMOUSECFG_REVERSE_SCROLLING;
case WSMOUSECFG_REVERSE_SCROLLING:
case WSMOUSECFG_REVERSE_SCROLLING: