After their creation (see previous sections), external
          (shared) lookup tables can be linked to multiple graphs. 
          You need to right-click either the Lookups 
          group or any of its items and select
           →  from the context menu. After that, a File
          selection wizard displaying the project content will
          open. You must expand the lookup folder in this
          wizard and select the desired lookup table file from all the files
          contained in this wizard.
You can even link multiple external (shared) lookup table files at
          once. To do this, right-click either the
          Lookups group or any of its items and select
           →  from the context menu. After that, a File
          selection wizard displaying the project content will
          open. You must expand the lookup folder in this
          wizard and select the desired lookup table files from all the files
          contained in this wizard. You can select adjacent file items when
          you press Shift and press the Down
          Cursor or the Up Cursor key. If you want
          to select non-adjacent items, use Ctrl+ at each of the desired file items instead.