content: function app()
      m.app = m.global.app
  
      if m.app = invalid
          m.app = {}
          gridParams = { rows: 2, cols: 5 }
          navParams = { rows: 11, cols: 7 }
          m.app.append({
              gridFields: _setGridFields(gridParams)
              navFields: _setNavFields(navParams)
          })
  
          m.global.addFields({ app: m.app })
      end if
      return m.app
  end function
  
  function _setGridFields(p_params)
      return gridUtil_setGrid(p_params.rows, p_params.cols)
  end function
  
  function _setNavFields(p_params)
      return gridUtil_setGrid(p_params.rows, p_params.cols)
  end function