DUALHEAD_ON
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
mode->flags |= DUALHEAD_ON;
case DUALHEAD_ON:
custom_mode.flags |= DUALHEAD_ON;
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON:
case DUALHEAD_ON: