code: public boolean getDisplayFieldDesc(ScreenField sField)
      {
          if (sField == this)
              return false; // Panels generally do not have descriptions
          if (sField instanceof SButtonBox)
              if (((SButtonBox)sField).getImageButtonName() != null)
                  return false;    // Buttons don't need their field descriptions (if there is a icon) in base screens
          return true;    // But the controls in them generally do.
      }
docs: Do I include a description for sField?
  Generally yes, except for on GridScreens.
  @param sField field to check for description includes.