WReverseVideo(p, on)
struct win *p;
int on;
{
  struct canvas *cv;
  for (cv = p->w_layer.l_cvlist; cv; cv = cv->c_lnext)
    {
      display = cv->c_display;
      if (cv != D_forecv)
	continue;
      ReverseVideo(on);
      if (!on && p->w_revvid && !D_CVR)
	{
	  if (D_VB)
	    AddCStr(D_VB);
	  else
	    p->w_bell = BELL_VISUAL;
	}
    }
}
WReverseVideo(p, on)
struct win *p;
int on;
{
  struct canvas *cv;
  for (cv = p->w_layer.l_cvlist; cv; cv = cv->c_lnext)
    {
      display = cv->c_display;
      if (cv != D_forecv)
	continue;
      ReverseVideo(on);
      if (!on && p->w_revvid && !D_CVR)
	{
	  if (D_VB)
	    AddCStr(D_VB);
	  else
	    p->w_bell = BELL_VISUAL;
	}
    }
}