docs: public void freeAllSFields(boolean bIncludeToolScreens)
      {
          int iToolScreens = 0;
          while (this.getSFieldCount() > iToolScreens)
          {   // First, get rid of all child screens.
              ScreenField sField = this.getSField(iToolScreens);
              if ((!bIncludeToolScreens) && (sField instanceof ToolScreen))
                  iToolScreens++;
              else
                  sField.free();
          }
      }